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lsaoznvo | chemistry | coordination-compounds | crystal-field-theory-(cft) | Which of the following compounds show colour due to d-d transition? | [{"identifier": "A", "content": "$\\mathrm{K}_2 \\mathrm{Cr}_2 \\mathrm{O}_7$"}, {"identifier": "B", "content": "$\\mathrm{CuSO}_4 \\cdot 5 \\mathrm{H}_2 \\mathrm{O}$"}, {"identifier": "C", "content": "$\\mathrm{KMnO}_4$"}, {"identifier": "D", "content": "$\\mathrm{K}_2 \\mathrm{CrO}_4$"}] | ["B"] | null | <p>Among the given options, the compounds that show color due to d-d transitions are those that have partially filled d-orbitals when in the form of complex ions or compounds.
<br/><br/>Let's examine each option:
<br/><br/>Option A: $\mathrm{K}_2 \mathrm{Cr}_2 \mathrm{O}_7$
<br/><br/>Chromium in $\mathrm{K}_2 \m... | mcq | jee-main-2024-online-1st-february-evening-shift | 1,606 |
lsbmdoyp | chemistry | coordination-compounds | crystal-field-theory-(cft) | Given below are two statements :<br/><br/>
<b>Statement (I)</b> : A solution of $\left[\mathrm{Ni}\left(\mathrm{H}_2 \mathrm{O}\right)_6\right]^{2+}$ is green in colour.<br/><br/>
<b>Statement (II)</b> : A solution of $\left[\mathrm{Ni}(\mathrm{CN})_4\right]^{2-}$ is colourless.<br/><br/>
In the light of the above stat... | [{"identifier": "A", "content": "Statement I is incorrect but Statement II is correct"}, {"identifier": "B", "content": "Both Statement I and Statement II are correct"}, {"identifier": "C", "content": "Both Statement I and Statement II are incorrect"}, {"identifier": "D", "content": "Statement I is correct but Statemen... | ["B"] | null | <p>In order to determine the correctness of the given statements, we need to analyze the nature of the mentioned complexes.</p>
<p><b>Statement (I)</b> asserts that a solution of $\left[\mathrm{Ni}\left(\mathrm{H}_2 \mathrm{O}\right)_6\right]^{2+}$ is green in color. This complex involves a nickel(II) cation coordinat... | mcq | jee-main-2024-online-1st-february-morning-shift | 1,607 |
jaoe38c1lsc59izv | chemistry | coordination-compounds | crystal-field-theory-(cft) | <p>Consider the following complex ions</p>
<p>$$\begin{aligned}
& \mathrm{P}=\left[\mathrm{FeF}_6\right]^{3-} \\
& \mathrm{Q}=\left[\mathrm{V}\left(\mathrm{H}_2 \mathrm{O}\right)_6\right]^{2+} \\
& \mathrm{R}=\left[\mathrm{Fe}\left(\mathrm{H}_2 \mathrm{O}\right)_6\right]^{2+}
\end{aligned}$$</p>
<p>The corr... | [{"identifier": "A", "content": "R < Q < P"}, {"identifier": "B", "content": "R < P < Q"}, {"identifier": "C", "content": "Q < R < P"}, {"identifier": "D", "content": "Q < P < R"}] | ["C"] | null | <p>$$\left[\mathrm{FeF}_6\right]^{3-}: \mathrm{Fe}^{+3}:[\mathrm{Ar}] 3 \mathrm{~d}^5$$</p>
<p>F : Weak field Ligand</p>
<p><img src="https://app-content.cdn.examgoal.net/fly/@width/image/6y3zli1lscva3o6/758bc05e-9d01-412b-a7d8-ec4429c4b40e/684a9b60-c64f-11ee-9d8b-f1be86a1b2f3/file-6y3zli1lscva3o7.png?format=png" data-... | mcq | jee-main-2024-online-27th-january-morning-shift | 1,608 |
jaoe38c1lscs47pm | chemistry | coordination-compounds | crystal-field-theory-(cft) | <p>The Spin only magnetic moment value of square planar complex $$\left[\mathrm{Pt}\left(\mathrm{NH}_3\right)_2 \mathrm{Cl}\left(\mathrm{NH}_2 \mathrm{CH}_3\right)\right] \mathrm{Cl}$$ is _________ B.M. (Nearest integer)</p>
<p>(Given atomic number for $$\mathrm{Pt}=78$$)</p> | [] | null | 0 | <p>$$\mathrm{Pt^2+ (d^8)}$$</p>
<p><img src="https://app-content.cdn.examgoal.net/fly/@width/image/1lt1o9ks1/2b05d4fd-da44-4afb-be6a-4a6453ee5a42/92074e10-d3f3-11ee-8d6b-33dde4413c62/file-1lt1o9ks2.png?format=png" data-orsrc="https://app-content.cdn.examgoal.net/image/1lt1o9ks1/2b05d4fd-da44-4afb-be6a-4a6453ee5a42/9207... | integer | jee-main-2024-online-27th-january-evening-shift | 1,609 |
jaoe38c1lsd98of1 | chemistry | coordination-compounds | crystal-field-theory-(cft) | <p>Select the option with correct property -</p> | [{"identifier": "A", "content": "$$\\left[\\mathrm{Ni}(\\mathrm{CO})_4\\right]$$ and $$\\left[\\mathrm{NiCl}_4\\right]^{2-}$$ both Paramagnetic\n"}, {"identifier": "B", "content": "$$\\left[\\mathrm{Ni}(\\mathrm{CO})_4\\right]$$ and $$\\left[\\mathrm{NiCl}_4\\right]^{2-}$$ both Diamagnetic\n"}, {"identifier": "C", "con... | ["D"] | null | <p>$$\left[\mathrm{Ni}(\mathrm{CO})_4\right] \rightarrow$$ diamagnetic, $$\mathrm{sp}^3$$ hybridisation, number of unpaired electrons $$=0$$</p>
<p>$$\left[\mathrm{NiCl}_4\right]^{2-}, \rightarrow$$ paramagnetic, $$\mathrm{sp}^3$$ hybridisation, number of unpaired electrons $$=2$$</p> | mcq | jee-main-2024-online-31st-january-evening-shift | 1,610 |
jaoe38c1lsd9sc34 | chemistry | coordination-compounds | crystal-field-theory-(cft) | <p>Match List I with List II</p>
<p><style type="text/css">
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.tg th{border-color:black;border-style:solid;bo... | [{"identifier": "A", "content": "A-IV, B-I, C-II, D-III\n"}, {"identifier": "B", "content": "A-III, B-II, C-IV, D-I\n"}, {"identifier": "C", "content": "A-II, B-III, C-IV, D-I\n"}, {"identifier": "D", "content": "A-IV, B-III, C-I, D-II"}] | ["C"] | null | <p>$$\begin{aligned}
& {\left[\mathrm{Cr}\left(\mathrm{H}_2 \mathrm{O}\right)_6\right]^{3+} \text { Contains } \mathrm{Cr}^{3+}:[\mathrm{Ar}] 3 \mathrm{~d}^3: \mathrm{t}_{2 \mathrm{~g}}^3 \mathrm{e}_{\mathrm{g}}^{\mathrm{o}}} \\
& {\left[\mathrm{Fe}\left(\mathrm{H}_2 \mathrm{O}\right)_6\right]^{3+} \text { Contains } \... | mcq | jee-main-2024-online-31st-january-evening-shift | 1,611 |
jaoe38c1lse8er57 | chemistry | coordination-compounds | crystal-field-theory-(cft) | <p>The 'Spin only' Magnetic moment for $$\left[\mathrm{Ni}\left(\mathrm{NH}_3\right)_6\right]^{2+}$$ is _________ $$\times 10^{-1} \mathrm{~BM}$$. (given $$=$$ Atomic number of $$\mathrm{Ni}: 28$$)</p> | [] | null | 28 | <p>$$\mathrm{NH}_3$$ act as WFL with $$\mathrm{Ni}^{2+}$$</p>
<p>$$\mathrm{Ni}^{2+}=3 \mathrm{~d}^8$$</p>
<p><img src="https://app-content.cdn.examgoal.net/fly/@width/image/6y3zli1lsoftktg/0add7453-dab6-494d-a1d8-d8f19e096961/5ba31640-ccac-11ee-aa98-13f456b8f7af/file-6y3zli1lsoftkth.png?format=png" data-orsrc="https://... | integer | jee-main-2024-online-31st-january-morning-shift | 1,612 |
lv0vy3lp | chemistry | coordination-compounds | crystal-field-theory-(cft) | <p>Number of complexes from the following with even number of unpaired "$$\mathrm{d}$$" electrons is ________ $$[\mathrm{V}(\mathrm{H}_2 \mathrm{O})_6]^{3+},[\mathrm{Cr}(\mathrm{H}_2 \mathrm{O})_6]^{2+},[\mathrm{Fe}(\mathrm{H}_2 \mathrm{O})_6]^{3+},[\mathrm{Ni}(\mathrm{H}_2 \mathrm{O})_6]^{3+},[\mathrm{Cu}(\mathrm{H}_2... | [{"identifier": "A", "content": "1"}, {"identifier": "B", "content": "5"}, {"identifier": "C", "content": "2"}, {"identifier": "D", "content": "4"}] | ["C"] | null | <p>$$\left[\mathrm{V}\left(\mathrm{H}_2 \mathrm{O}\right)_6\right]^{3+} \rightarrow 2$$ unpaired electrons</p>
<p>$$\left[\mathrm{Cr}\left(\mathrm{H}_2 \mathrm{O}\right)_6\right]^{2+} \rightarrow 4$$ unpaired electrons</p>
<p>Above 2 complex have even number of unpaired electrons.</p> | mcq | jee-main-2024-online-4th-april-morning-shift | 1,613 |
lv0vyqlr | chemistry | coordination-compounds | crystal-field-theory-(cft) | <p>The correct sequence of ligands in the order of decreasing field strength is :</p> | [{"identifier": "A", "content": "$$\\mathrm{NCS}^{-}>\\mathrm{EDTA}^{4-}>\\mathrm{CN}^{-}>\\mathrm{CO}$$\n"}, {"identifier": "B", "content": "$$\\mathrm{CO}>\\mathrm{H}_2 \\mathrm{O}>\\mathrm{F}^{-}>\\mathrm{S}^{2-}$$\n"}, {"identifier": "C", "content": "$$\\mathrm{S}^{2-}>{ }^{-} \\mathrm{OH}>\\mathrm{EDTA}^{4-}>\\mat... | ["B"] | null | <p>$$
\text { Field strength order : } \mathrm{CO}>\mathrm{H}_2 \mathrm{O}>\mathrm{F}^{-}>\mathrm{S}^{2-}
$$</p> | mcq | jee-main-2024-online-4th-april-morning-shift | 1,614 |
lv2es1b9 | chemistry | coordination-compounds | crystal-field-theory-(cft) | <p>If an iron (III) complex with the formula $$\left[\mathrm{Fe}\left(\mathrm{NH}_3\right)_x(\mathrm{CN})_y\right]^-$$ has no electron in its $$e_g$$ orbital, then the value of $$x+y$$ is</p> | [{"identifier": "A", "content": "6"}, {"identifier": "B", "content": "4"}, {"identifier": "C", "content": "3"}, {"identifier": "D", "content": "5"}] | ["A"] | null | <p>Balancing charges,</p>
<p>$$\begin{aligned}
& 3-y=-1 \\
& \Rightarrow y=4 \\
& x=2 \\
& x+y=6 \\
&
\end{aligned}$$</p> | mcq | jee-main-2024-online-4th-april-evening-shift | 1,615 |
lv2erl1i | chemistry | coordination-compounds | crystal-field-theory-(cft) | <p>The number of unpaired d-electrons in $$\left[\mathrm{Co}\left(\mathrm{H}_2 \mathrm{O}\right)_6\right]^{3+}$$ is ________.</p> | [{"identifier": "A", "content": "0"}, {"identifier": "B", "content": "2"}, {"identifier": "C", "content": "1"}, {"identifier": "D", "content": "4"}] | ["A"] | null | <p>$$\left[\mathrm{Co}\left(\mathrm{H}_2 \mathrm{O}\right)_6\right]^{3+}$$ is an inner orbital complex.</p>
<p>So, electronic configuration is $$\mathrm{t}_{2 \mathrm{~g}}^6 \mathrm{e}_{\mathrm{g}}^0$$.</p>
<p>All electrons are paired.</p> | mcq | jee-main-2024-online-4th-april-evening-shift | 1,616 |
lv3xm5x0 | chemistry | coordination-compounds | crystal-field-theory-(cft) | <p>Match List I with List II</p>
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.tg th{border-color:black;border-style:solid;bo... | [{"identifier": "A", "content": "(A)-(IV), (B)-(III), (C)-(I), (D)-(II)\n"}, {"identifier": "B", "content": "(A)-(II), (B)-(III), (C)-(I), (D)-(IV)\n"}, {"identifier": "C", "content": "(A)-(I), (B)-(IV), (C)-(II), (D)-(III)\n"}, {"identifier": "D", "content": "(A)-(II), (B)-(IV), (C)-(I), (D)-(III)"}] | ["D"] | null | <p><img src="https://app-content.cdn.examgoal.net/fly/@width/image/1lw51h7y4/3dfcddc4-3d2d-41d9-99f3-0011c638f32e/3d5a74b0-1132-11ef-a602-fda21ee9ce62/file-1lw51h7y5.png?format=png" data-orsrc="https://app-content.cdn.examgoal.net/image/1lw51h7y4/3dfcddc4-3d2d-41d9-99f3-0011c638f32e/3d5a74b0-1132-11ef-a602-fda21ee9ce62... | mcq | jee-main-2024-online-8th-april-evening-shift | 1,618 |
lv40v8tx | chemistry | coordination-compounds | crystal-field-theory-(cft) | <p>Total number of unpaired electrons in the complex ions $$[\mathrm{Co}(\mathrm{NH}_3)_6]^{3+}$$ and $$[\mathrm{NiCl}_4]^{2-}$$ is ________.</p> | [] | null | 2 | <p>$$\left[\mathrm{Co}\left(\mathrm{NH}_3\right)_6\right]^{3+}: \mathrm{Co}^{3+}: \mathrm{t}_{2 \mathrm{~g}}^6 \mathrm{e}_{\mathrm{g}}^0: \mathrm{n}=0$$</p>
<p>$$\left[\mathrm{NiCl}_4\right]^{2-}: \mathrm{Ni}^{2+}: t_{2 \mathrm{~g}}^6 \mathrm{e}_{\mathrm{g}}^2: \mathrm{n}=2$$</p> | integer | jee-main-2024-online-8th-april-evening-shift | 1,619 |
lv5gs2vh | chemistry | coordination-compounds | crystal-field-theory-(cft) | <p>Number of Complexes with even number of electrons in $$\mathrm{t_{2 g}}$$ orbitals is -</p>
<p>$$\left[\mathrm{Fe}\left(\mathrm{H}_2 \mathrm{O}\right)_6\right]^{2+},\left[\mathrm{Co}\left(\mathrm{H}_2 \mathrm{O}\right)_6\right]^{2+},\left[\mathrm{Co}\left(\mathrm{H}_2 \mathrm{O}\right)_6\right]^{3+},\left[\mathrm{Cu... | [{"identifier": "A", "content": "3"}, {"identifier": "B", "content": "2"}, {"identifier": "C", "content": "1"}, {"identifier": "D", "content": "5"}] | ["A"] | null | <p>To determine the number of complexes with an even number of electrons in the $$\mathrm{t_{2g}}$$ orbitals, we first need to determine the electronic configuration of the metal ions in each complex and then find the distribution of electrons among the $$\mathrm{t_{2g}}$$ and $$\mathrm{e_{g}}$$ orbitals.</p>
<p>Let's... | mcq | jee-main-2024-online-8th-april-morning-shift | 1,620 |
lv5gt3fp | chemistry | coordination-compounds | crystal-field-theory-(cft) | <p>The 'spin only' magnetic moment value of $$\mathrm{MO}_4{ }^{2-}$$ is ________ BM. (Where M is a metal having least metallic radii. among $$\mathrm{Sc}, \mathrm{Ti}, \mathrm{V}, \mathrm{Cr}, \mathrm{Mn}$$ and $$\mathrm{Zn}$$ ).</p>
<p>(Given atomic number: $$\mathrm{Sc}=21, \mathrm{Ti}=22, \mathrm{~V}=23, \mathrm{Cr... | [] | null | 0 | <p>The given ion is $$\mathrm{MO}_4{ }^{2-}$$ where M is the metal ion and needs to be identified from Sc, Ti, V, Cr, Mn, and Zn based on the least metallic radii. Among these metals, Zn has the least metallic radii. Therefore, M is identified as Zn.</p>
<p>Zinc (Zn) has an atomic number of 30. In a neutral state, zin... | integer | jee-main-2024-online-8th-april-morning-shift | 1,621 |
lv7v4q6u | chemistry | coordination-compounds | crystal-field-theory-(cft) | <p>The correct order of ligands arranged in increasing field strength.</p> | [{"identifier": "A", "content": "$$\\mathrm{F}^{-}<\\mathrm{Br}^{-}<\\mathrm{I}^{-}<\\mathrm{NH}_3$$\n"}, {"identifier": "B", "content": "$$\\mathrm{H}_2 \\mathrm{O}<\\mathrm{^{-}OH}<\\mathrm{CN}^{-}<\\mathrm{NH}_3$$\n"}, {"identifier": "C", "content": "$$\\mathrm{Br}^{-}<\\mathrm{F}^{-}<\\mathrm{H}_2 \\mathrm{O}<\\mat... | ["C"] | null | <p>The correct answer is <strong>Option C</strong>:
<p>$$ \mathrm{Br}^{-}<\mathrm{F}^{-}<\mathrm{H}_2 \mathrm{O}<\mathrm{NH}_3 $$.</p>
</p>
<p>Here's why:</p>
<p>The spectrochemical series is a list of ligands arranged in order of increasing field strength. This means that ligands higher on the series cause a larg... | mcq | jee-main-2024-online-5th-april-morning-shift | 1,622 |
lv7v4nzf | chemistry | coordination-compounds | crystal-field-theory-(cft) | <p>The spin-only magnetic moment value of the ion among $$\mathrm{Ti}^{2+}, \mathrm{V}^{2+}, \mathrm{Co}^{3+}$$ and $$\mathrm{Cr}^{2+}$$, that acts as strong oxidising agent in aqueous solution is _________ BM (Near integer).</p>
<p>(Given atomic numbers : $$\mathrm{Ti}: 22, \mathrm{~V}: 23, \mathrm{Cr}: 24, \mathrm{Co... | [] | null | 5 | <p>The ion which acts as strong oxidising agent in aqueous solution is $$\mathrm{Cr}^{2+}:[\mathrm{Ar}] 4 s^{\circ} 3 d^4$$</p>
<p>$$\mu=\sqrt{4(4+2)}=4.89 \Rightarrow 5$$</p> | integer | jee-main-2024-online-5th-april-morning-shift | 1,624 |
lv9s26x9 | chemistry | coordination-compounds | crystal-field-theory-(cft) | <p>The number of complexes from the following with no electrons in the $$t_2$$ orbital is ______.</p> <p>$$\mathrm{TiCl}_4,\left[\mathrm{MnO}_4\right]^{-},\left[\mathrm{FeO}_4\right]^{2-},\left[\mathrm{FeCl}_4\right]^{-},\left[\mathrm{CoCl}_4\right]^{2-}$$</p> | [{"identifier": "A", "content": "4"}, {"identifier": "B", "content": "2"}, {"identifier": "C", "content": "3"}, {"identifier": "D", "content": "1"}] | ["C"] | null | <p><p><strong>Identifying the electronic configuration and geometry :</strong></p>
<p>The condition "no electrons in the $ t_2 $ orbital" typically applies to a tetrahedral crystal field splitting pattern. In a tetrahedral field:</p></p>
<p><p>The $ d $-orbitals split into two sets: $ e $ (lower energy, 2 orbitals) a... | mcq | jee-main-2024-online-5th-april-evening-shift | 1,625 |
lvb2a2am | chemistry | coordination-compounds | crystal-field-theory-(cft) | <p>Match List I with List II.</p>
<p><style type="text/css">
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.tg th{border-color:black;border-style:solid;b... | [{"identifier": "A", "content": "(A)-(IV), (B)-(III), (C)-(I), (D)-(II)\n"}, {"identifier": "B", "content": "(A)-(III), (B)-(I), (C)-(IV), (D)-(II)\n"}, {"identifier": "C", "content": "(A)-(I), (B)-(III), (C)-(IV), (D)-(II)\n"}, {"identifier": "D", "content": "(A)-(III), (B)-(IV), (C)-(II), (D)-(I)"}] | ["B"] | null | <p>(A) $$\mathrm{TiCl}_4: \mathrm{Ti}^{4+}: 3 d^0 4 s^0$$ or $$\mathrm{e}^0 \mathrm{t}_2^0$$</p>
<p>(B) $$\left[\mathrm{FeO}_4\right]^{2-}: \mathrm{Fe}^{6+}: 3 d^2 4 s^0$$ or $$\mathrm{e}^2 \mathrm{t}_2^0$$</p>
<p>(C) $$\left[\mathrm{FeCl}_4\right]^{-}: \mathrm{Fe}^{3+}: 3 d^5 4 s^0$$ or $$\mathrm{e}^2 \mathrm{t}_2^3$$... | mcq | jee-main-2024-online-6th-april-evening-shift | 1,626 |
lvc58e8v | chemistry | coordination-compounds | crystal-field-theory-(cft) | <p>Consider the following complexes</p>
<p>(A) $$\left[\mathrm{CoCl}\left(\mathrm{NH}_3\right)_5\right]^{2+}$$, (B) $$\left[\mathrm{Co}(\mathrm{CN})_6\right]^{3-}$$, (C) $$
\left[\mathrm{Co}\left(\mathrm{NH}_3\right)_5\left(\mathrm{H}_2 \mathrm{O}\right)\right]^{3+}
$$, (D) $$\left[\mathrm{Cu}\left(\mathrm{H}_2 \mathrm... | [{"identifier": "A", "content": "D < A < C < B"}, {"identifier": "B", "content": "B < C < A < D"}, {"identifier": "C", "content": "C < D < A < B"}, {"identifier": "D", "content": "A < C < B < D"}] | ["A"] | null | <p>Wavenumber $$=\frac{1}{\lambda} \propto$$ Frequency $$\propto \Delta_0$$</p>
<p>Wavenumber order : $$\mathrm{D}<\mathrm{A}<\mathrm{C}<\mathrm{B}$$</p> | mcq | jee-main-2024-online-6th-april-morning-shift | 1,627 |
lvc5869e | chemistry | coordination-compounds | crystal-field-theory-(cft) | <p>The difference in the 'spin-only' magnetic moment values of $$\mathrm{KMnO}_4$$ and the manganese product formed during titration of $$\mathrm{KMnO}_4$$ against oxalic acid in acidic medium is ________ $$\mathrm{BM}$$. (nearest integer)</p> | [] | null | 6 | <p>The 'spin-only' magnetic moment for $$\mathrm{Mn}^{7+}$$ is $$0$$ BM. During the titration of $$\mathrm{KMnO}_4$$ with oxalic acid in an acidic medium, manganese is reduced to $$\mathrm{Mn}^{2+}$$, which has a 'spin-only' magnetic moment of $$5.91$$ BM.</p>
<p>Thus, the difference in magnetic moment values is calcu... | integer | jee-main-2024-online-6th-april-morning-shift | 1,628 |
Ayp9esSeCFh069MM | chemistry | coordination-compounds | isomerism-of-coordination-compounds | Which one the following has largest number of isomers? (R = alkyl group, en = ethylenediamine) | [{"identifier": "A", "content": "[Ru(NH<sub>3</sub>)<sub>4</sub>Cl<sub>2</sub>]<sup>+</sup>"}, {"identifier": "B", "content": "[Co(en)<sub>2</sub>Cl<sub>2</sub>]<sup>+</sup>"}, {"identifier": "C", "content": "[Ir(PR<sub>3</sub>)<sub>2</sub> H(CO)]<sup>2+</sup> "}, {"identifier": "D", "content": "[Co(NH<sub>3</sub>)<sub... | ["B"] | null | Isomers
<br><br><img class="question-image" src="https://res.cloudinary.com/dckxllbjy/image/upload/v1734267153/exam_images/t6kzirpiirilzhoyo7rc.webp" loading="lazy" alt="AIEEE 2004 Chemistry - Coordination Compounds Question 266 English Explanation"> | mcq | aieee-2004 | 1,630 |
40k4wR3leD7b6ASn | chemistry | coordination-compounds | isomerism-of-coordination-compounds | Which of the following compounds shows optical isomerism? | [{"identifier": "A", "content": "[Cu(NH<sub>3</sub>)<sub>4</sub>]<sup>+2</sup> "}, {"identifier": "B", "content": "[ZnCl<sub>4</sub>]<sup>-2</sup>"}, {"identifier": "C", "content": "[Cr(C<sub>2</sub>O<sub>4</sub>)<sub>3</sub>]<sup>-3</sup>"}, {"identifier": "D", "content": "[Co(CN)<sub>6</sub>]<sup>-3</sup>"}] | ["C"] | null | <img class="question-image" src="https://res.cloudinary.com/dckxllbjy/image/upload/v1734265903/exam_images/lclsaqrtqi5fiobcube0.webp" loading="lazy" alt="AIEEE 2005 Chemistry - Coordination Compounds Question 261 English Explanation"> | mcq | aieee-2005 | 1,631 |
HLJEP8t0WzG85cu7 | chemistry | coordination-compounds | isomerism-of-coordination-compounds | Which of the following has an optical isomer ?
| [{"identifier": "A", "content": "[Co(en)(NH<sub>3</sub>)<sub>2</sub>]<sup>2+</sup>"}, {"identifier": "B", "content": "[Co(H<sub>2</sub>O)<sub>4</sub>(en)]<sup>3+</sup>"}, {"identifier": "C", "content": "[Co(en)<sub>2</sub>(NH<sub>3</sub>)<sub>2</sub>]<sup>3+</sup>"}, {"identifier": "D", "content": "[Co(NH<sub>3</sub>)<... | ["C"] | null | <img class="question-image" src="https://res.cloudinary.com/dckxllbjy/image/upload/v1734266910/exam_images/crz9igdlfyfxvosggcyo.webp" loading="lazy" alt="AIEEE 2009 Chemistry - Coordination Compounds Question 251 English Explanation"> | mcq | aieee-2009 | 1,633 |
masR4Kqxbhmju2CT | chemistry | coordination-compounds | isomerism-of-coordination-compounds | Which one of the following has an optical isomer ?<br/>
(en = ethylenediamine) | [{"identifier": "A", "content": "[Zn (en) (NH<sub>3</sub>)<sub>2</sub>]<sup>2+</sup> "}, {"identifier": "B", "content": "[Co (en)<sub>3</sub>]<sup>3+</sup> "}, {"identifier": "C", "content": "[Co (H<sub>2</sub>O)<sub>4</sub> en]<sup>3+</sup> "}, {"identifier": "D", "content": "[Zn (en)<sub>2</sub>]<sup>2+</sup>"}] | ["B"] | null | For a substance to be optical isomers following conditions should be fulfilled
<br><br>$$(a)\,\,\,$$ A coordination compound which can rotate the plane of polarized light is said to be optically active.
<br><br>$$(b)\,\,\,$$ When the coordination compounds have same formula but differ in their abilities to rotate dir... | mcq | aieee-2010 | 1,634 |
m3hpz4Vfwxw80D63 | chemistry | coordination-compounds | isomerism-of-coordination-compounds | Which of the following complex species is not expected to exhibit optical isomerism? | [{"identifier": "A", "content": "[Co (en)<sub>2</sub> Cl<sub>2</sub>]<sup>-</sup>"}, {"identifier": "B", "content": "[Co (NH<sub>3</sub>)<sub>3</sub> Cl<sub>3</sub>]"}, {"identifier": "C", "content": "[Co (en) (NH<sub>3</sub>)<sub>2</sub> Cl<sub>2</sub>]<sup>+</sup>"}, {"identifier": "D", "content": "[Co (en)<sub>3</su... | ["B"] | null | Octahedral coordination entities of the type $$M{a_3}{b_3}$$ exhibit Geometrical isomerism. The compound exists both as facial and meridional isomers.
<br><br><img class="question-image" src="https://res.cloudinary.com/dckxllbjy/image/upload/v1734264276/exam_images/g3bkxjtxqkd6atlh8ljb.webp" loading="lazy" alt="JEE Ma... | mcq | jee-main-2013-offline | 1,635 |
OFVTMSbLgw8PXc7Z | chemistry | coordination-compounds | isomerism-of-coordination-compounds | Which one of the following complexes shows optical isomerism?<br/>
(en = ethylenediamine) | [{"identifier": "A", "content": "cis[Co(en)<sub>2</sub>Cl<sub>2</sub>]Cl"}, {"identifier": "B", "content": "trans[Co(en)<sub>2</sub>Cl<sub>2</sub>]Cl"}, {"identifier": "C", "content": "[Co(NH<sub>3</sub>)<sub>4</sub>Cl<sub>2</sub>]Cl"}, {"identifier": "D", "content": "[Co(NH<sub>3</sub>)<sub>3</sub>Cl<sub>3</sub>]"}] | ["A"] | null | Optical isomerism occurs when a molecule is non-superimposable with its mirror image hence the complex $$cis - \left[ {Co{{\left( {en} \right)}_2}C{l_2}} \right]Cl$$ is optically active.
<br><br><img src="https://app-content.cdn.examgoal.net/fly/@width/image/1l86jxoo4/6aa92b27-7eac-4a1e-8065-5026941f4b11/03194550-36e... | mcq | jee-main-2016-offline | 1,637 |
poQKH4U75Dh7P0AnRk4xT | chemistry | coordination-compounds | isomerism-of-coordination-compounds | The total number of possible isomers for square-planar [Pt(Cl)(NO<sub>2</sub>)(NO<sub>3</sub>)(SCN)]<sup>2-</sup> is : | [{"identifier": "A", "content": "8"}, {"identifier": "B", "content": "12"}, {"identifier": "C", "content": "16"}, {"identifier": "D", "content": "24"}] | ["B"] | null | <p>The complexes with formula [Mabcd]<sup>n±</sup> can have three geometrical isomers. As NO<sup>2−</sup> and SCN<sup>−</sup> are ambidentate ligands, therefore 4 × 3 = 12 geometrical isomers will be possible.</p> | mcq | jee-main-2018-online-15th-april-evening-slot | 1,638 |
qXDYEcfHKbmURV1O | chemistry | coordination-compounds | isomerism-of-coordination-compounds | Consider the following reaction and statements:<br/>
[Co(NH<sub>3</sub>)<sub>4</sub>Br<sub>2</sub>]<sup>+</sup> + Br<sup>-</sup> $$\to$$ [Co(NH<sub>3</sub>)<sub>3</sub>Br<sub>3</sub>] + NH<sub>3</sub><br/>
(I) Two isomers are produced if the reactant complex ion is a cis-isomer<br/>
(II) Two isomers are produced if the... | [{"identifier": "A", "content": "(II) and (IV)"}, {"identifier": "B", "content": "(I) and (II)"}, {"identifier": "C", "content": "(I) and (III)"}, {"identifier": "D", "content": "(III) and (IV)"}] | ["C"] | null | When reactant is cis isomer then following reaction takes place.
<br><br><img class="question-image" src="https://res.cloudinary.com/dckxllbjy/image/upload/v1734267200/exam_images/hhptk7khn8nggt6mqcu8.webp" loading="lazy" alt="JEE Main 2018 (Offline) Chemistry - Coordination Compounds Question 237 English Explanation ... | mcq | jee-main-2018-offline | 1,640 |
gr67zpMmJ2f4WyiBKU4Zo | chemistry | coordination-compounds | isomerism-of-coordination-compounds | The total number of isomers for a square planar complex<br/> [M(F)(Cl)(SCN)(NO<sub>2</sub>)] is | [{"identifier": "A", "content": "16"}, {"identifier": "B", "content": "8"}, {"identifier": "C", "content": "12"}, {"identifier": "D", "content": "4"}] | ["C"] | null | <img src="https://res.cloudinary.com/dckxllbjy/image/upload/v1734263335/exam_images/jedryvzxtxcjtaai69it.webp" style="max-width: 100%;height: auto;display: block;margin: 0 auto;" loading="lazy" alt="JEE Main 2019 (Online) 10th January Morning Slot Chemistry - Coordination Compounds Question 222 English Explanation 1">
... | mcq | jee-main-2019-online-10th-january-morning-slot | 1,641 |
EWk3FD5LCpoxqEbnu8M7C | chemistry | coordination-compounds | isomerism-of-coordination-compounds | A reaction of cobalt (III) chloride and ethylenediamine in a 1 : 2 mole ratio generates two isomeric products A (violet coloured) and B (green coloured). A can show optical activity, but B is optically inactive. What
type of isomers does A and B represcent? | [{"identifier": "A", "content": "Ionisation isomers"}, {"identifier": "B", "content": "Linkage isomers "}, {"identifier": "C", "content": "Coordination isomers "}, {"identifier": "D", "content": "Geometrical isomers "}] | ["D"] | null | CoCl<sub>3</sub>
+ en $$ \to $$ [Co(en)<sub>2</sub>Cl<sub>2</sub>]Cl
<br> 1 : 2
<picture><source media="(max-width: 320px)" srcset="https://res.cloudinary.com/dckxllbjy/image/upload/v1734266165/exam_images/ahfzq6yjfuakubw9gqmv.webp"><img src="https://res.cloud... | mcq | jee-main-2019-online-10th-january-evening-slot | 1,642 |
VEutkL2JfIOEa6Q5jGoQE | chemistry | coordination-compounds | isomerism-of-coordination-compounds | The one that will show optical activity is :<br/>
(en = ethane-1,2-diamine) | [{"identifier": "A", "content": "<img src=\"https://res.cloudinary.com/dckxllbjy/image/upload/v1734267002/exam_images/nyqjcsmjc6hzneceplpi.webp\" style=\"max-width: 100%; height: auto;display: block;margin: 0 auto;\" loading=\"lazy\" alt=\"JEE Main 2019 (Online) 9th April Morning Slot Chemistry - Coordination Compound... | ["C"] | null | <picture><source media="(max-width: 320px)" srcset="https://res.cloudinary.com/dckxllbjy/image/upload/v1734266813/exam_images/x08dt6rqfqmit9zxmojy.webp"><img src="https://res.cloudinary.com/dckxllbjy/image/upload/v1734266717/exam_images/pr9nrsfj2wpnxrxjf5rk.webp" style="max-width: 100%;height: auto;display: block;margi... | mcq | jee-main-2019-online-9th-april-morning-slot | 1,643 |
tNYwnhBB08JlR4v5kX3rsa0w2w9jwvfk50q | chemistry | coordination-compounds | isomerism-of-coordination-compounds | The species that can have a trans-isomer is :
<br/>(en = ehane-1, 2-diamine, ox = oxalate) | [{"identifier": "A", "content": "[Cr(en)<sup>2</sup>(ox)]<sup>+</sup>"}, {"identifier": "B", "content": "[Pt(en)Cl<sub>2</sub>]"}, {"identifier": "C", "content": "[Pt(en)<sub>2</sub>Cl<sub>2</sub>]<sup>2+</sup>"}, {"identifier": "D", "content": "[Zn(en)Cl<sub>2</sub>]"}] | ["C"] | null | <picture><source media="(max-width: 320px)" srcset="https://res.cloudinary.com/dckxllbjy/image/upload/v1734263321/exam_images/nlz2jrtchghxt8v6fhso.webp"><img src="https://res.cloudinary.com/dckxllbjy/image/upload/v1734265403/exam_images/nv17fofvdsuujli9orys.webp" style="max-width: 100%;height: auto;display: block;margi... | mcq | jee-main-2019-online-10th-april-morning-slot | 1,644 |
fft7VUommHheSwG2EAjgy2xukf260nxu | chemistry | coordination-compounds | isomerism-of-coordination-compounds | The complex that can show optical activity is : | [{"identifier": "A", "content": "cis-[Fe(NH<sub>3</sub>)<sub>2</sub>(CN)<sub>4</sub>]<sup>\u2013</sup>"}, {"identifier": "B", "content": "trans-[Cr(Cl<sub>2</sub>)(ox)<sub>2</sub>]<sup>3\u2013</sup>"}, {"identifier": "C", "content": "trans-[Fe(NH<sub>3</sub>)<sub>2</sub>(CN)<sub>4</sub>]<sup>\u2013</sup>"}, {"identifie... | ["D"] | null | <img src="https://res.cloudinary.com/dckxllbjy/image/upload/v1734265606/exam_images/iowm4mh8y1ydzpverool.webp" style="max-width: 100%;height: auto;display: block;margin: 0 auto;" loading="lazy" alt="JEE Main 2020 (Online) 3rd September Morning Slot Chemistry - Coordination Compounds Question 180 English Explanation">
<... | mcq | jee-main-2020-online-3rd-september-morning-slot | 1,645 |
fwfAGYIljIqSeKNWEcjgy2xukf93y6xw | chemistry | coordination-compounds | isomerism-of-coordination-compounds | The number of isomers possible for
<br/>[Pt(en)(NO<sub>2</sub>)<sub>2</sub>] is : | [{"identifier": "A", "content": "3"}, {"identifier": "B", "content": "1"}, {"identifier": "C", "content": "4"}, {"identifier": "D", "content": "2"}] | ["A"] | null | <img src="https://res.cloudinary.com/dckxllbjy/image/upload/v1734264569/exam_images/wulrcp5ewdcxjiumaxi4.webp" style="max-width: 100%;height: auto;display: block;margin: 0 auto;" loading="lazy" alt="JEE Main 2020 (Online) 4th September Morning Slot Chemistry - Coordination Compounds Question 176 English Explanation">
<... | mcq | jee-main-2020-online-4th-september-morning-slot | 1,647 |
mfJx94Bp9k9spINXJMjgy2xukeyfafid | chemistry | coordination-compounds | isomerism-of-coordination-compounds | The one that is not expected to show isomerism
is : | [{"identifier": "A", "content": "[Pt(NH<sub>3</sub>)<sub>2</sub>Cl<sub>2</sub>]"}, {"identifier": "B", "content": "[Ni(NH<sub>3</sub>)<sub>4</sub>(H<sub>2</sub>O)<sub>2</sub>]<sup>2+</sup>\n"}, {"identifier": "C", "content": "[Ni(en)<sub>3</sub>]<sup>2+</sup>"}, {"identifier": "D", "content": "[Ni(NH<sub>3</sub>)<sub>2... | ["D"] | null | [Pt(NH<sub>3</sub>)<sub>2</sub>Cl<sub>2</sub>] is dsp<sup>2</sup> hybridisation and shows geometrical
isomerism.
<br><br>[Ni(NH<sub>3</sub>)<sub>4</sub>(H<sub>2</sub>O)<sub>2</sub>]<sup>2+</sup> is Octahedral, show
geometrical isomerism.
<br><br>[Ni(en)<sub>3</sub>]<sup>2+</sup> is Octahedral and shows optical
isomeri... | mcq | jee-main-2020-online-2nd-september-evening-slot | 1,648 |
yO2oNOERoTRIcfsnUt7k9k2k5idm5w4 | chemistry | coordination-compounds | isomerism-of-coordination-compounds | Complex X of composition Cr(H<sub>2</sub>O)<sub>6</sub>Cl<sub>n</sub>
has a spin only magnetic moment of 3.83
BM. It reacts with AgNO<sub>3</sub> and shows
geometrical isomerism. The IUPAC
nomenclature of X is : | [{"identifier": "A", "content": "Hexaaqua chromium (III) chloride"}, {"identifier": "B", "content": "Tetraaquadichlorido chromium(IV)\nchloride dihydrate"}, {"identifier": "C", "content": "Tetraaquadichlorido chromium (III)\nchloride dihydrate"}, {"identifier": "D", "content": "Dichloridotetraaqua chromium (IV)\nchlori... | ["C"] | null | Given complex Cr(H<sub>2</sub>O)<sub>6</sub>Cl<sub>n</sub>
<br><br>As the magnetic mement is 3.83 BM then
<br><br>Spin only magnetic moment = $$\sqrt {n\left( {n + 2} \right)} $$ BM = 3.83
<br><br>$$ \Rightarrow $$ n = 3
<br><br>Chromium
in +3 oxidation state so molecular formula is
Cr(H<sub>2</sub>O)<sub>6</sub>Cl<su... | mcq | jee-main-2020-online-9th-january-morning-slot | 1,649 |
ghTjG9Ue6vkfOiRHW27k9k2k5hlmtrs | chemistry | coordination-compounds | isomerism-of-coordination-compounds | Among (a) – (d) the complexes that can display
geometrical isomerism are :<br/>
(a) [Pt(NH<sub>3</sub>)<sub>3</sub>Cl]<sup>+</sup> <br/>
(b) [Pt(NH<sub>3</sub>)Cl<sub>5</sub>]<sup>–</sup><br/>
(c) [Pt(NH<sub>3</sub>)<sub>2</sub>Cl(NO<sub>2</sub>)]<br/>
(d) [Pt(NH<sub>3</sub>)<sub>4</sub>ClBr]<sup>2+</sup> | [{"identifier": "A", "content": "(a) and (b)"}, {"identifier": "B", "content": "(c) and (d)"}, {"identifier": "C", "content": "(d) and (a)"}, {"identifier": "D", "content": "(b) and (c)"}] | ["B"] | null | [Pt(NH<sub>3</sub>)<sub>2</sub>Cl(NO<sub>2</sub>)] and [Pt(NH<sub>3</sub>)<sub>4</sub>ClBr]<sup>2+</sup> can display geometrical isomerism.
<br><img src="https://res.cloudinary.com/dckxllbjy/image/upload/v1734264462/exam_images/fpj4m5qwqnv8y0de5kvv.webp" style="max-width: 100%;height: auto;display: block;margin: 0 auto... | mcq | jee-main-2020-online-8th-january-evening-slot | 1,650 |
LD4JFANZA4KqWGKO8g7k9k2k5h0mokz | chemistry | coordination-compounds | isomerism-of-coordination-compounds | The complex that can show fac- and mer-isomers is : | [{"identifier": "A", "content": "[CoCl<sub>2</sub>(en)<sub>2</sub>]"}, {"identifier": "B", "content": "[Pt(NH<sub>3</sub>)<sub>2</sub>Cl<sub>2</sub>]"}, {"identifier": "C", "content": "[Co(NH<sub>3</sub>)<sub>3</sub>(NO<sub>2</sub>)<sub>3</sub>]"}, {"identifier": "D", "content": "[Co(NH<sub>3</sub>)<sub>4</sub>Cl<sub>2... | ["C"] | null | [Ma<sub>3</sub>b<sub>3</sub>] type complex shows fac and mer
isomerism.
<br><br>So [Co(NH<sub>3</sub>)<sub>3</sub>(NO<sub>2</sub>)<sub>3</sub>] is correct answer. | mcq | jee-main-2020-online-8th-january-morning-slot | 1,651 |
lQ3SCNbx9Fdlsguz0u7k9k2k5ephcwc | chemistry | coordination-compounds | isomerism-of-coordination-compounds | The number of possible optical isomers for the complexes MA<sub>2</sub>B<sub>2</sub> with sp<sup>3</sup> and dsp<sup>2</sup> hydridized metal atom. respectively, is :<br/>
Note : A and B are unidentate netural and unidentate monoanionic ligands, respectively. | [{"identifier": "A", "content": "0 and 2\n"}, {"identifier": "B", "content": "0 and 0"}, {"identifier": "C", "content": "0 and 1"}, {"identifier": "D", "content": "2 and 2"}] | ["B"] | null | (a) If the complex MA<sub>2</sub>B<sub>2</sub> is sp<sup>3</sup> hybridised then
the shape of this complex is tetrahedral this
structure is opticaly inactive due to the presence
of plane of symmetry.
<img src="https://res.cloudinary.com/dckxllbjy/image/upload/v1734264870/exam_images/ygctyspqmk1nybhfbhv8.webp" style="ma... | mcq | jee-main-2020-online-7th-january-evening-slot | 1,652 |
GXBsGf7nXWdtJ5R3Fp7k9k2k5llk6yl | chemistry | coordination-compounds | isomerism-of-coordination-compounds | The isomer(s) of [Co(NH<sub>3</sub>)<sub>4</sub>Cl<sub>2</sub>] that has/have
a Cl–Co–Cl angle of 90°, is/are : | [{"identifier": "A", "content": "cis only"}, {"identifier": "B", "content": "cis and trans"}, {"identifier": "C", "content": "meridional and trans"}, {"identifier": "D", "content": "trans only"}] | ["A"] | null | [Co(NH<sub>3</sub>)<sub>4</sub>Cl<sub>2</sub>] has 2 geometrical isomers.
<img src="https://res.cloudinary.com/dckxllbjy/image/upload/v1734264398/exam_images/zynpckvsllgwg6xauelb.webp" style="max-width: 100%;height: auto;display: block;margin: 0 auto;" loading="lazy" alt="JEE Main 2020 (Online) 9th January Evening Slot... | mcq | jee-main-2020-online-9th-january-evening-slot | 1,653 |
5JmOjI3X1Q6gkHCIaL1klut3x0q | chemistry | coordination-compounds | isomerism-of-coordination-compounds | The number of stereoisomers possible for [Co(ox)<sub>2</sub>(Br)(NH<sub>3</sub>)]<sup>2$$-$$</sup> is ___________. [ox = oxalate] | [] | null | 3 | <p>The coordination compound [Co(ox)<sub>2</sub>(Br)(NH<sub>3</sub>)]<sup>2$$-$$</sup>
of general
formula [M(A - A)<sub>2</sub>BC]
can show both geometrical and optical
isomerism (stereoisomerism).</p>
<p> <img src="https://app-content.cdn.examgoal.net/fly/@width/image/1l45s7k5s/45bd7874-47ea-4ab5-a1ac-c24ebe62ca98/b89... | integer | jee-main-2021-online-26th-february-evening-slot | 1,654 |
9XrqDUPcB3Erd4IPTl1kmhunoyj | chemistry | coordination-compounds | isomerism-of-coordination-compounds | The equivalents of ethylene diamine required to replace the neutral ligands from the coordination sphere of the trans-complex of CoCl<sub>3</sub> . 4NH<sub>3</sub> is _________. (Round off to the Nearest Integer). | [] | null | 2 | <p>$$[Co{(N{H_3}]_4}C{l_2}]Cl + 2en \to [Co{(en)_2}C{l_2}] + 4N{H_3}$$</p>
<p>NH<sub>3</sub> is the neutral monodentate ligand. Ethylene diamine is a neutral didentate ligand.</p>
<p>$${H_2}\mathop N\limits^{ \bullet \,\, \bullet } - C{H_2} - C{H_2} - \mathop N\limits^{ \bullet \,\, \bullet } {H_2}(en)$$</p>
<p>So, tw... | integer | jee-main-2021-online-16th-march-morning-shift | 1,655 |
nK8A6SQhxF15DHEJB91kmkj4496 | chemistry | coordination-compounds | isomerism-of-coordination-compounds | Match List - I with List - II :<br/><br/><table>
<thead>
<tr>
<th></th>
<th>List - I<br/></th>
<th></th>
<th>List - II<br/></th>
</tr>
</thead>
<tbody>
<tr>
<td>(a)</td>
<td>$$[Co{(N{H_3})_6}][Cr{(CN)_6}]$$</td>
<td>(i)</td>
<td>Linkage isomerism</td>
</tr>
<tr>
<td>(b)</td>
<td>$$[Co{(N{H_3})_3}{(N{O_2})_3}]$$</td>
<t... | [{"identifier": "A", "content": "(a)-(i), (b)-(ii), (c)-(iii), (d)-(iv)"}, {"identifier": "B", "content": "(a)-(iii), (b)-(i), (c)-(ii), (d)-(iv)"}, {"identifier": "C", "content": "(a)-(ii), (b)-(i), (c)-(iii), (d)-(iv)"}, {"identifier": "D", "content": "(a)-(iv), (b)-(ii), (c)-(iii), (d)-(i)"}] | ["B"] | null | (a) [Co(NH<sub>3</sub>)<sub>6</sub>][Cr(CN)<sub>6</sub>] $$ \to $$ (iii) Coordination isomerism<br><br>
(b) [Co(NH<sub>3</sub>)<sub>3</sub>(NO<sub>2</sub>)<sub>3</sub>] $$ \to $$ (i) Linkage isomerism<br><br>
(c) [Cr(H<sub>2</sub>O)<sub>6</sub>]Cl<sub>3</sub> $$ \to $$ (ii) Solvate isomerism<br><br>
(d) cis-[CrCl<sub>2... | mcq | jee-main-2021-online-17th-march-evening-shift | 1,656 |
1krz0jp1u | chemistry | coordination-compounds | isomerism-of-coordination-compounds | The number of geometrical isomers found in the metal <br/>complexes [PtCl<sub>2</sub>(NH<sub>3</sub>)<sub>2</sub>], [Ni(CO)<sub>4</sub>], [Ru(H<sub>2</sub>O)<sub>3</sub>Cl<sub>3</sub> and [CoCl<sub>2</sub>(NH<sub>3</sub>)<sub>4</sub>]<sup>+</sup> respectively, are : | [{"identifier": "A", "content": "1, 1, 1, 1"}, {"identifier": "B", "content": "2, 1, 2, 2"}, {"identifier": "C", "content": "2, 0, 2, 2"}, {"identifier": "D", "content": "2, 1, 2, 1"}] | ["C"] | null | <img src="https://res.cloudinary.com/dckxllbjy/image/upload/v1734266746/exam_images/xdxyckrakyl0ubcgdk1q.webp" style="max-width: 100%;height: auto;display: block;margin: 0 auto;" loading="lazy" alt="JEE Main 2021 (Online) 27th July Morning Shift Chemistry - Coordination Compounds Question 140 English Explanation"> | mcq | jee-main-2021-online-27th-july-morning-shift | 1,658 |
1krz2ooiz | chemistry | coordination-compounds | isomerism-of-coordination-compounds | The number of geometrical isomers possible in triamminetrinitrocobalt (III) is X and in trioxalatochromate (III) is Y. Then the value of X + Y is _______________. | [] | null | 2 | Triamminetrinitrocobalt (III) $$\to$$ [Co(NO<sub>2</sub>)<sub>3</sub>(NH<sub>3</sub>)<sub>3</sub>]<br><br>trioxalatochromate (III) ion $$\to$$ [Cr(C<sub>2</sub>O<sub>4</sub>)<sub>3</sub>]<sup>3$$-$$</sup>[Co(NO<sub>2</sub>)<sub>3</sub>(NH<sub>3</sub>)<sub>3</sub>]<br><br><img src="https://res.cloudinary.com/dckxllbjy/i... | integer | jee-main-2021-online-27th-july-morning-shift | 1,659 |
1ktcozpiz | chemistry | coordination-compounds | isomerism-of-coordination-compounds | Indicate the complex/complex ion which did not show any geometrical isomerism : | [{"identifier": "A", "content": "[CoCl<sub>2</sub>(en)<sub>2</sub>]"}, {"identifier": "B", "content": "[Co(CN)<sub>5</sub>(NC)]<sup>3$$-$$</sup>"}, {"identifier": "C", "content": "[Co(NH<sub>3</sub>)<sub>3</sub>(NO<sub>2</sub>)<sub>3</sub>]"}, {"identifier": "D", "content": "[Co(NH<sub>3</sub>)<sub>4</sub>Cl<sub>2</sub... | ["B"] | null | (a) [CoCl<sub>2</sub>(en)<sub>2</sub>] show Cis-trans isomerism<br><br>(b) [Co(CN)<sub>5</sub>(NC)]<sup>3$$-$$</sup> can't show G.I.<br><br>(3) [Co(NH<sub>3</sub>)<sub>3</sub>(NO<sub>2</sub>)<sub>3</sub>] show fac & mer isomerism<br><br>(d) [Co(NH<sub>3</sub>)<sub>4</sub>Cl<sub>2</sub>]<sup>+</sup> show cis & t... | mcq | jee-main-2021-online-26th-august-evening-shift | 1,660 |
1ktftfbwi | chemistry | coordination-compounds | isomerism-of-coordination-compounds | The number of optical isomers possible for [Cr(C<sub>2</sub>O<sub>4</sub>)<sub>3</sub>]<sup>3$$-$$</sup> is ____________. | [] | null | 2 | The number of optical isomers for [Cr(C<sub>2</sub>O<sub>4</sub>)<sub>3</sub>]<sup>3$$-$$</sup> is two.<br><br><img src="https://res.cloudinary.com/dckxllbjy/image/upload/v1734267355/exam_images/oa8iv2m7zldbn0lnjjpx.webp" style="max-width: 100%;height: auto;display: block;margin: 0 auto;" loading="lazy" alt="JEE Main 2... | integer | jee-main-2021-online-27th-august-evening-shift | 1,661 |
1l55o6x2d | chemistry | coordination-compounds | isomerism-of-coordination-compounds | <p>(a) CoCl<sub>3</sub>.4NH<sub>3</sub>, (b) CoCl<sub>3</sub>.5NH<sub>3</sub>, (c) CoCl<sub>3</sub>.6NH<sub>3</sub> and (d) CoCl(NO<sub>3</sub>)<sub>2</sub>.5NH<sub>3</sub>.</p>
<p>Number of complex(es) which will exist in cis-trans form is/are _______________.</p> | [] | null | 1 | $\mathrm{CoCl}_{3} \cdot 4 \mathrm{NH}_{3} \Rightarrow\left[\mathrm{Co}\left(\mathrm{NH}_{3}\right)_{4} \mathrm{Cl}_{2}\right] \mathrm{Cl}$
<br/><br/>
$\mathrm{CoCl}_{3} \cdot 5 \mathrm{NH}_{3} \Rightarrow\left[\mathrm{Co}\left(\mathrm{NH}_{3}\right)_{5} \mathrm{Cl}\right] \mathrm{Cl}_{2}$
<br/><br/>
$\mathrm{CoCl}_{3}... | integer | jee-main-2022-online-28th-june-evening-shift | 1,662 |
1l6mef6zn | chemistry | coordination-compounds | isomerism-of-coordination-compounds | <p>Total number of relatively more stable isomer(s) possible for octahedral complex $$\left[\mathrm{Cu}(\mathrm{en})_{2}(\mathrm{SCN})_{2}\right]$$ will be _________.</p> | [] | null | 3 | [Cu(en)<sub>2</sub>(SCN)<sub>2</sub>] <br><br>
<img src="https://app-content.cdn.examgoal.net/fly/@width/image/1l7oxzzob/0643c210-4a02-4437-83a1-7e95afd35f26/e75622b0-2d32-11ed-b144-5949e1cb6ba8/file-1l7oxzzoc.png?format=png" data-orsrc="https://app-content.cdn.examgoal.net/image/1l7oxzzob/0643c210-4a02-4437-83a1-7e95a... | integer | jee-main-2022-online-28th-july-morning-shift | 1,663 |
1ldo2xcgw | chemistry | coordination-compounds | isomerism-of-coordination-compounds | <p>The complex cation which has two isomers is :</p> | [{"identifier": "A", "content": "$$\\left[\\mathrm{Co}\\left(\\mathrm{NH}_{3}\\right)_{5} \\mathrm{Cl}\\right]^{+}$$"}, {"identifier": "B", "content": "$$\\left[\\mathrm{Co}\\left(\\mathrm{H}_{2} \\mathrm{O}\\right)_{6}\\right]^{3+}$$"}, {"identifier": "C", "content": "$$\\left[\\mathrm{Co}\\left(\\mathrm{NH}_{3}\\righ... | ["C"] | null | Complex $$\left[\mathrm{Co}\left(\mathrm{NH}_{3}\right)_{5} \mathrm{NO}_{2}\right]^{2+}$$ will have two isomer one
linked through N (Nitro) and one through O (Nitrite).
| mcq | jee-main-2023-online-1st-february-evening-shift | 1,664 |
1ldss91g5 | chemistry | coordination-compounds | isomerism-of-coordination-compounds | <p>Chiral complex from the following is :</p>
<p>Here en = ethylene diamine</p> | [{"identifier": "A", "content": "$$\\mathrm{cis-[PtCl_2(en)_2]^{2+}}$$"}, {"identifier": "B", "content": "$$\\mathrm{trans-[Co(NH_3)_4Cl_2]^{+}}$$"}, {"identifier": "C", "content": "$$\\mathrm{trans-[PtCl_2(en)_2]^{2+}}$$"}, {"identifier": "D", "content": "$$\\mathrm{cis-[PtCl_2(NH_3)_2]}$$"}] | ["A"] | null | <p><img src="https://app-content.cdn.examgoal.net/fly/@width/image/1lekpbxk0/684d115e-d63d-461c-959c-04a467bf8a39/624d1a00-b573-11ed-b96f-23ae160a1d3b/file-1lekpbxk1.png?format=png" data-orsrc="https://app-content.cdn.examgoal.net/image/1lekpbxk0/684d115e-d63d-461c-959c-04a467bf8a39/624d1a00-b573-11ed-b96f-23ae160a1d3b... | mcq | jee-main-2023-online-29th-january-morning-shift | 1,666 |
1lgp2fvmg | chemistry | coordination-compounds | isomerism-of-coordination-compounds | <p>The total number of stereoisomers for the complex $$\left[\mathrm{Cr}(o x)_{2} \mathrm{ClBr}\right]^{3-}$$ (where $$o x=$$ oxalate) is :</p> | [{"identifier": "A", "content": "1"}, {"identifier": "B", "content": "3"}, {"identifier": "C", "content": "2"}, {"identifier": "D", "content": "4"}] | ["B"] | null | $\left[\mathrm{Cr}(\mathrm{Ox})_2 \mathrm{ClBr}\right]^{-3}$<br><br>
- No. of isomers -
<br><br>
<img src="https://app-content.cdn.examgoal.net/fly/@width/image/1lgsnydra/b9578d46-3a45-4ca1-b777-35cec3230c52/b4501c60-e16c-11ed-b529-e972ab4de0e3/file-1lgsnydrb.png?format=png" data-orsrc="https://app-content.cdn.examgoal... | mcq | jee-main-2023-online-13th-april-evening-shift | 1,667 |
1lgsy839o | chemistry | coordination-compounds | isomerism-of-coordination-compounds | <p>If $$\mathrm{Ni}^{2+}$$ is replaced by $$\mathrm{Pt}^{2+}$$ in the complex $$\left[\mathrm{NiCl}_{2} \mathrm{Br}_{2}\right]^{2-}$$, which of the following properties are expected to get changed ?</p>
<p>A. Geometry</p>
<p>B. Geometrical isomerism</p>
<p>C. Optical isomerism</p>
<p>D. Magnetic properties</p> | [{"identifier": "A", "content": "A and D"}, {"identifier": "B", "content": "A, B and D"}, {"identifier": "C", "content": "A, B and C"}, {"identifier": "D", "content": "B and C"}] | ["B"] | null | The complex $\left[\mathrm{NiCl}_{2} \mathrm{Br}_{2}\right]^{2-}$ is a tetrahedral complex due to the fact that Nickel (Ni) in this complex is in its +2 oxidation state, and thus adopts a dsp² hybridization, resulting in a tetrahedral geometry.
<br/><br/>If $\mathrm{Ni}^{2+}$ is replaced by $\mathrm{Pt}^{2+}$, the new... | mcq | jee-main-2023-online-11th-april-evening-shift | 1,668 |
lsbm3yq7 | chemistry | coordination-compounds | isomerism-of-coordination-compounds | Which of the following complex is homoleptic? | [{"identifier": "A", "content": "$\\left[\\mathrm{Ni}\\left(\\mathrm{NH}_3\\right)_2 \\mathrm{Cl}_2\\right]$"}, {"identifier": "B", "content": "$\\left[\\mathrm{Co}\\left(\\mathrm{NH}_3\\right)_4 \\mathrm{Cl}_2\\right]^{+}$"}, {"identifier": "C", "content": "$\\left[\\mathrm{Fe}\\left(\\mathrm{NH}_3\\right)_4 \\mathrm{... | ["D"] | null | <p>A homoleptic complex is one in which a central metal atom or ion is surrounded by only one kind of donor groups, ligands or ions. On the other hand, a heteroleptic complex contains a central metal surrounded by more than one kind of donor groups, ligands or ions.</p>
<p>Let's examine the given options :</p>
<p>Opt... | mcq | jee-main-2024-online-1st-february-morning-shift | 1,669 |
1lsg8pf6x | chemistry | coordination-compounds | isomerism-of-coordination-compounds | <p>Number of complexes which show optical isomerism among the following is ________.</p>
<p>$$\text { cis- }\left[\mathrm{Cr}(\mathrm{ox})_2 \mathrm{Cl}_2\right]^{3-},\left[\mathrm{Co}(\text {en})_3\right]^{3+}, \text { cis- }\left[\mathrm{Pt}(\text {en})_2 \mathrm{Cl}_2\right]^{2+}, \text { cis- }\left[\mathrm{Co}(\te... | [] | null | 4 | <p>cis $$-\left[\mathrm{Cr}(\mathrm{ox})_2 \mathrm{Cl}_2\right]^{3-} \rightarrow$$ can show optical isomerism (no POS & COS)</p>
<p>$$\left[\mathrm{Co}(\mathrm{en})_3\right]^{3+} \rightarrow \text { can show (no POS & COS) }$$</p>
<p>$$\text { cis }-\left[\mathrm{Pt}(\mathrm{en})_2 \mathrm{Cl}_2\right]^{2+} \rightarrow... | integer | jee-main-2024-online-30th-january-evening-shift | 1,670 |
luz2u40s | chemistry | coordination-compounds | isomerism-of-coordination-compounds | <p>Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R).</p>
<p>Assertion (A): The total number of geometrical isomers shown by $$[\mathrm{Co}(\mathrm{en})_2 \mathrm{Cl}_2]^{+}$$ complex ion is three.</p>
<p>Reason (R): $$[\mathrm{Co}(\mathrm{en})_2 \mathrm{Cl}_2]^{+... | [{"identifier": "A", "content": "(A) is correct but (R) is not correct"}, {"identifier": "B", "content": "(A) is not correct but (R) is correct"}, {"identifier": "C", "content": "Both (A) and (R) are correct but (R) is not the correct explanation of (A)"}, {"identifier": "D", "content": "Both (A) and (R) are correct an... | ["B"] | null | <p>To evaluate the assertion and the reason, let's first analyze the given complex ion $$[\mathrm{Co}(\mathrm{en})_2 \mathrm{Cl}_2]^{+}$$.</p>
<p>1. <strong>Assertion (A):</strong> The total number of geometrical isomers shown by $$[\mathrm{Co}(\mathrm{en})_2 \mathrm{Cl}_2]^{+}$$ complex ion is three.</p>
<p>2. <stro... | mcq | jee-main-2024-online-9th-april-morning-shift | 1,671 |
lv9s2pwh | chemistry | coordination-compounds | isomerism-of-coordination-compounds | <p>The metal atom present in the complex MABXL (where A, B, X and L are unidentate ligands and $$\mathrm{M}$$ is metal) involves $$\mathrm{sp}^3$$ hybridization. The number of geometrical isomers exhibited by the complex is :</p> | [{"identifier": "A", "content": "0"}, {"identifier": "B", "content": "2"}, {"identifier": "C", "content": "3"}, {"identifier": "D", "content": "4"}] | ["A"] | null | <p>To determine the number of geometrical isomers for the given complex $$\mathrm{MABXL}$$, where $$\mathrm{M}$$ is a metal and $$\mathrm{A}$$, $$\mathrm{B}$$, $$\mathrm{X}$$, and $$\mathrm{L}$$ are unidentate ligands, we need to consider the geometry implied by the $\mathrm{sp}^3$ hybridization of the metal. The $\mat... | mcq | jee-main-2024-online-5th-april-evening-shift | 1,672 |
o6qiYzxzuWmBQihq | chemistry | coordination-compounds | nomenclature-of-coordination-compounds | The IUPAC name of the coordination compound K<sub>3</sub>[Fe(CN)<sub>6</sub>] is | [{"identifier": "A", "content": "Potassium hexacyanoferrate (II)"}, {"identifier": "B", "content": "Potassium hexacyanoferrate (III)"}, {"identifier": "C", "content": "Potassium hexacyanoiron (II)"}, {"identifier": "D", "content": "Tripotassium hexcyanoiron (II) "}] | ["B"] | null | $${K_3}\left[ {Fe{{\left( {CN} \right)}_6}} \right]\,\,\,$$ is potassium hexacyano ferrate $$\left( {{\rm I}{\rm I}{\rm I}} \right).$$ | mcq | aieee-2005 | 1,673 |
fZGIaIOBAdwc2YmS | chemistry | coordination-compounds | nomenclature-of-coordination-compounds | The IUPAC name for the complex [Co(NO<sub>2</sub>)(NH<sub>3</sub>)<sub>5</sub>]Cl<sub>2</sub> is | [{"identifier": "A", "content": "nitrito-N-pentaamminecobalt (III) chloride"}, {"identifier": "B", "content": "nitrito-N-pentaamminecobalt (II) chloride"}, {"identifier": "C", "content": "pentaammine nitrito-N-cobalt (II) chloride"}, {"identifier": "D", "content": "pentaammine nitrito-N-cobalt (III) chloride "}] | ["D"] | null | <p>The IUPAC name for the complex $[\text{Co(NO}_2)(\text{NH}_3)_5]\text{Cl}_2$ is:
Pentaammine(nitrito-$\text{N,O}$)cobalt(III) chloride</p>
<p><b>Here's how to arrive at the name:</b>
</p>
<p>The complex is a cobalt complex, and cobalt has a +3 charge in this compound (since it has one negatively charged NO$_2$ liga... | mcq | aieee-2006 | 1,674 |
6XZUImf3vFKRewJX | chemistry | coordination-compounds | nomenclature-of-coordination-compounds | Which among the following will be named as dibromidobis (ethylene diamine) chromium(III) bromide? | [{"identifier": "A", "content": "[Cr (en)<sub>3</sub> ] Br<sub>3</sub> "}, {"identifier": "B", "content": "[Cr (en)<sub>2</sub> Br<sub>2</sub> ] Br"}, {"identifier": "C", "content": "[Cr (en) Br<sub>4</sub> ]<sup>-</sup>"}, {"identifier": "D", "content": "[Cr (en) Br<sub>2</sub> ] Br"}] | ["B"] | null | $$\left[ {Cr{{\left( {en} \right)}_2}B{r_2}} \right]Br$$
<br><br>dibromidobis (ethylenediamine) chromium $$\left( {{\rm I}{\rm I}{\rm I}} \right)$$ Bromide. | mcq | aieee-2012 | 1,675 |
svmtYVHA3K02hH7BRP7k9k2k5dz59pb | chemistry | coordination-compounds | nomenclature-of-coordination-compounds | The IUPAC name of complex [Pt(NH<sub>3</sub>)<sub>2</sub>Cl(NH<sub>2</sub>CH<sub>3</sub>)]Cl is:
| [{"identifier": "A", "content": "Diamminechlorido (methanamine) platinum(II)chloride."}, {"identifier": "B", "content": "Biasmmine (methanamine)chlorido platinum(II)chloride."}, {"identifier": "C", "content": "Diamminechlorido (amminomethane) platinum(II) chloride."}, {"identifier": "D", "content": "Diammine (methanami... | ["A"] | null | [Pt(NH<sub>3</sub>)<sub>2</sub>Cl(NH<sub>2</sub>CH<sub>3</sub>)]Cl
<br><br>x + 0 – 1 + 0 = +1
<br><br>x = +2
<br><br>So Pt present in Pt<sup>+2</sup> form.
<br><br>$$ \therefore $$ Correct IUPAC form
<br><br>Diamminechlorido (methanamine) platinum(II)chloride. | mcq | jee-main-2020-online-7th-january-morning-slot | 1,676 |
YyHh4Kf0uIXBWaLwWMjgy2xukf3ngbjk | chemistry | coordination-compounds | nomenclature-of-coordination-compounds | Complex A has a composition of H<sub>12</sub>O<sub>6</sub>Cl<sub>3</sub>Cr. If the complex on treatment with conc.H<sub>2</sub>SO<sub>4</sub>
loses
13.5% of its original mass, the correct molecular formula of A is :
<br/>[Given: atomic mass of Cr = 52 amu and Cl = 35 amu] | [{"identifier": "A", "content": "[Cr(H<sub>2</sub>O)<sub>5</sub>Cl]Cl<sub>2</sub>.H<sub>2</sub>O"}, {"identifier": "B", "content": "[Cr(H<sub>2</sub>O)<sub>4</sub>Cl<sub>2</sub>]Cl.2H<sub>2</sub>O"}, {"identifier": "C", "content": "[Cr(H<sub>2</sub>O)<sub>3</sub>Cl<sub>3</sub>].3H<sub>2</sub>O"}, {"identifier": "D", "c... | ["B"] | null | Let x molecule of water are lost then
<br><br>13.5 = $$\left[ {{{x \times 18} \over {6 \times 18 + 3 \times 35 + 52}}} \right] \times 100$$
<br><br>$$ \Rightarrow $$ x = 1.99 $$ \simeq $$ 2
<br><br>$$ \therefore $$ Around two moles of water are lost during
heating.
<br><br>$$ \therefore $$ Formula of complex could be
<... | mcq | jee-main-2020-online-3rd-september-evening-slot | 1,677 |
1lh329qjt | chemistry | coordination-compounds | nomenclature-of-coordination-compounds | <p>The IUPAC name of $$\mathrm{K}_{3}\left[\mathrm{Co}\left(\mathrm{C}_{2} \mathrm{O}_{4}\right)_{3}\right]$$ is:-</p> | [{"identifier": "A", "content": "Potassium tris(oxalato)cobalt(III)"}, {"identifier": "B", "content": "Potassium tris(oxalato)cobaltate(III)"}, {"identifier": "C", "content": "Potassium trioxalatocobaltate(III)"}, {"identifier": "D", "content": "Potassium trioxalatocobalt(III)"}] | ["C"] | null | <p>To determine the IUPAC name of the compound K₃[Co(C₂O₄)₃], let's follow the nomenclature rules for coordination compounds:</p>
<p><p><strong>Identify the Cation and Anion</strong>: The compound consists of potassium ions (K⁺) and a complex anion [Co(C₂O₄)₃]³⁻.</p></p>
<p><p><strong>Name the Cation First</strong>: T... | mcq | jee-main-2023-online-6th-april-evening-shift | 1,678 |
luz2ux0g | chemistry | coordination-compounds | nomenclature-of-coordination-compounds | <p>Number of ambidentate ligands among the following is _________.</p>
<p>$$\mathrm{NO}_2^{-}, \mathrm{SCN}^{-}, \mathrm{C}_2 \mathrm{O}_4^{2-}, \mathrm{NH}_3, \mathrm{CN}^{-}, \mathrm{SO}_4^{2-}, \mathrm{H}_2 \mathrm{O} \text {. }$$</p> | [] | null | 3 | <p>Ambidentate ligands are ligands that can attach to a central metal atom through two different atoms. Let’s analyze the given ligands one by one:</p>
<ul>
<li><b>$$\mathrm{NO}_2^{-}$$:</b> This ligand can bind through either the nitrogen (N) or the oxygen (O). Therefore, $$\mathrm{NO}_2^{-}$$ is an ambidentate liga... | integer | jee-main-2024-online-9th-april-morning-shift | 1,679 |
lvb2a7ya | chemistry | coordination-compounds | nomenclature-of-coordination-compounds | <p>The correct IUPAC name of $$[\mathrm{PtBr}_2(\mathrm{PMe}_3)_2]$$ is :</p> | [{"identifier": "A", "content": "bis(trimethylphosphine)dibromoplatinum(II)\n"}, {"identifier": "B", "content": "dibromodi(trimethylphosphine)platinum(II)\n"}, {"identifier": "C", "content": "dibromobis(trimethylphosphine)platinum(II)\n"}, {"identifier": "D", "content": "bis[bromo(trimethylphosphine)]platinum(II)"}] | ["C"] | null | <p>The correct IUPAC name of $$[\mathrm{PtBr}_2(\mathrm{PMe}_3)_2]$$ is dibromobis(trimethylphosphine)platinum(II).</p> | mcq | jee-main-2024-online-6th-april-evening-shift | 1,680 |
40Jnl2W98XY3AZTR | chemistry | coordination-compounds | warner's-theory-and-valence-bond-theory | The correct order of magnetic moments (spin only values in B.M.) among is :<br/>
(Atomic numbers: Mn = 25; Fe = 26, Co =27) | [{"identifier": "A", "content": "[MnCl<sub>4</sub>]<sup>2-</sup> > [CoCl<sub>4</sub>]<sup>-2</sup> > [Fe(CN)<sub>6</sub>]<sup>-4</sup>"}, {"identifier": "B", "content": "[Fe(CN)<sub>6</sub>]<sup>-4</sup> > [CoCl<sub>4</sub>]<sup>2-</sup> > [MnCl<sub>4</sub>]<sup>2-</sup>"}, {"identifier": "C", "content": "[... | ["A"] | null | <img class="question-image" src="https://res.cloudinary.com/dckxllbjy/image/upload/v1734265276/exam_images/cetydr5cb4egokabj0ms.webp" loading="lazy" alt="AIEEE 2004 Chemistry - Coordination Compounds Question 265 English Explanation">
<br><br><b>NOTE :</b> The greater the number of unpaired electrons, greater the magn... | mcq | aieee-2004 | 1,681 |
NkthvtwsouqmRRNd | chemistry | coordination-compounds | warner's-theory-and-valence-bond-theory | Which one of the following complexes in an outer orbital complex? | [{"identifier": "A", "content": "[Fe(CN)<sub>6</sub>]<sup>4-</sup> "}, {"identifier": "B", "content": "[Ni(NH<sub>3</sub>)<sub>6</sub>]<sup>2+</sup>"}, {"identifier": "C", "content": "[Co(NH<sub>3</sub>)<sub>6</sub>]<sup>3+ </sup>"}, {"identifier": "D", "content": "[Mn(CN)<sub>6</sub>]<sup>4-</sup>"}] | ["B"] | null | Hybridisation
<br><br>$$\mathop {{{\left[ {Fe{{\left( {CN} \right)}_6}} \right]}^{4 - }},}\limits_{{d^2}s{p^3}} \,\,\mathop {{{\left[ {Mn{{\left( {CN} \right)}_6}} \right]}^{4 - }},}\limits_{{d^2}s{p^3}} $$
<br><br>$$\mathop {{{\left[ {Co{{\left( {N{H_3}} \right)}_3}} \right]}^{3 + }},}\limits_{{d^2}s{p^3}} \,\,\matho... | mcq | aieee-2004 | 1,682 |
vaZqaiWXWkvBFFT0 | chemistry | coordination-compounds | warner's-theory-and-valence-bond-theory | Among the properties (a) reducing (b) oxidising (c) complexing, the set of properties shown by CN<sup>–</sup> ion
towards metal species is : | [{"identifier": "A", "content": "c, a"}, {"identifier": "B", "content": "b, c"}, {"identifier": "C", "content": "a, b"}, {"identifier": "D", "content": "a, b, c"}] | ["A"] | null | $$C{N^ - }$$ ion acts good complexing as well as reducing agent. | mcq | aieee-2004 | 1,683 |
BClBtSUGp0NJL2jm | chemistry | coordination-compounds | warner's-theory-and-valence-bond-theory | Which one of the following cyano complexes would exhibit the lowest value of
paramagnetic behaviour? <br/>
(At. No. Cr = 24, Mn = 25, Fe = 26, Co = 27) | [{"identifier": "A", "content": "[Cr(CN)<sub>6</sub>]<sup>-3 </sup>"}, {"identifier": "B", "content": "[Mn(CN)<sub>6</sub>]<sup>-3</sup>"}, {"identifier": "C", "content": "[Fe(CN)<sub>6</sub>]<sup>-3</sup> "}, {"identifier": "D", "content": "[Co(CN)<sub>6</sub>]<sup>-3</sup>"}] | ["D"] | null | <table class="tg">
<tbody><tr>
<th class="tg-4kyz"></th>
<th class="tg-4kyz"></th>
<th class="tg-4kyz"></th>
<th class="tg-bzci">No. of unpaired electron</th>
</tr>
<tr>
<td class="tg-4kyz">a)</td>
<td class="tg-4kyz">Co<sup>3+</sup></td>
<td class="tg-4kyz"></td>
<td class="tg-bzc... | mcq | aieee-2005 | 1,684 |
qV8n6cJID5GHsZ6b | chemistry | coordination-compounds | warner's-theory-and-valence-bond-theory | Nickel (Z = 28) combines with a uninegative monodentate ligand X<sup>–</sup> to form a paramagnetic complex [NiX<sub>4</sub>]<sup>2−</sup> . The number of unpaired electron(s) in the nickel and geometry of this complex ion are,
respectively | [{"identifier": "A", "content": "one, tetrahedral"}, {"identifier": "B", "content": "two, tetrahedral "}, {"identifier": "C", "content": "one, square planar"}, {"identifier": "D", "content": "two, square planar"}] | ["B"] | null | $${\left[ {Ni{X_4}} \right]^{2 - }},$$ the electronic configuration of $$N{i^{2 + }}$$ is
<br><br><img class="question-image" src="https://res.cloudinary.com/dckxllbjy/image/upload/v1734263849/exam_images/ldpebyunogdlq9congmi.webp" loading="lazy" alt="AIEEE 2006 Chemistry - Coordination Compounds Question 258 English ... | mcq | aieee-2006 | 1,685 |
KBYjU1PZq4M3XljT | chemistry | coordination-compounds | warner's-theory-and-valence-bond-theory | In Fe(CO)<sub>5</sub>, the Fe – C bond possesses : | [{"identifier": "A", "content": "\u03c0-character only"}, {"identifier": "B", "content": "both $$\\sigma$$ and \u03c0 characters "}, {"identifier": "C", "content": "ionic character"}, {"identifier": "D", "content": "$$\\sigma$$-character"}] | ["B"] | null | Due to some back-bonding by side-wise overlapping of between $$d$$-orbitals of metal and $$p$$-orbital of carbon, the $$Fe-C$$ bond in $$Fe{\left( {CO} \right)_5}$$ has both $$\sigma $$ and $$\pi $$ character. | mcq | aieee-2006 | 1,686 |
TOAWMOIzh3scQl0m | chemistry | coordination-compounds | warner's-theory-and-valence-bond-theory | Which one of the following has a square planar geometry? | [{"identifier": "A", "content": "[CoCl<sub>4</sub>]<sup>2-</sup>"}, {"identifier": "B", "content": "[FeCl<sub>4</sub>]<sup>2-</sup>"}, {"identifier": "C", "content": "[NiCl<sub>4</sub>]<sup>2-</sup>"}, {"identifier": "D", "content": "[PtCl<sub>4</sub>]<sup>2-</sup>"}] | ["D"] | null | Complexes with $$ds{p^2}$$ hybridisation are square planar. So $$\,\,{\left[ {PtC{l_4}} \right]^{2 - }}\,\,$$ is square planar in shape. | mcq | aieee-2007 | 1,687 |
7TnFUrrxH2mrZkAd | chemistry | coordination-compounds | warner's-theory-and-valence-bond-theory | Which of the following facts about the complex [Cr (NH<sub>3</sub>)<sub>6</sub> ]Cl<sub>3</sub> is wrong? | [{"identifier": "A", "content": "The complex is paramagnetic "}, {"identifier": "B", "content": "The complex is an outer orbital complex "}, {"identifier": "C", "content": "The complex gives white precipitate with silver nitrate solution"}, {"identifier": "D", "content": "The complex involves d<sup>2</sup>sp<sup>3</sup... | ["B"] | null | $$\left[ {Cr{{\left( {N{H_3}} \right)}_6}} \right]C{l_3}\,\,$$ is an inner orbital complex, because in this complex $$d-$$orbital used is of lower quantum number i.e. $$(n-1).$$ It results from $${d^2}\,\,\,$$ $$s{p^3}$$ (inner orbital) hybridization. | mcq | aieee-2011 | 1,688 |
4ECfPwwyPWONuD2m | chemistry | coordination-compounds | warner's-theory-and-valence-bond-theory | The magnetic moment (spin only) of [NiCl<sub>4</sub>]<sup>2−</sup> is | [{"identifier": "A", "content": "5.46 BM "}, {"identifier": "B", "content": "2.82 BM"}, {"identifier": "C", "content": "1.41 BM "}, {"identifier": "D", "content": "1.82 BM"}] | ["B"] | null | $${\left[ {NiC{l_4}} \right]^{2 - }}\,\left( {{d^8}} \right)$$
<br><br><img class="question-image" src="https://res.cloudinary.com/dckxllbjy/image/upload/v1734264927/exam_images/krl0rbk2yuojdpy52rje.webp" loading="lazy" alt="AIEEE 2011 Chemistry - Coordination Compounds Question 246 English Explanation">
<br><br><i>i.... | mcq | aieee-2011 | 1,689 |
TFd6QU4VPk9f6eLx | chemistry | coordination-compounds | warner's-theory-and-valence-bond-theory | The pair having the same magnetic moment is : <br/>
[At. No.: Cr = 24, Mn = 25, Fe = 26, Co = 27] | [{"identifier": "A", "content": "[Cr(H<sub>2</sub>O)<sub>6</sub>]<sup>2+</sup> and [Fe(H<sub>2</sub>O)<sub>6</sub>]<sup>2+ </sup>"}, {"identifier": "B", "content": "[Mn(H<sub>2</sub>O)<sub>6</sub>]<sup>2+</sup> and [Cr(H<sub>2</sub>O)<sub>6</sub>]<sup>2+</sup>"}, {"identifier": "C", "content": "[CoCl<sub>4</sub>]<sup>2... | ["A"] | null | <img src="https://app-content.cdn.examgoal.net/fly/@width/image/1l86jvqlz/776c9877-f5bf-4f9a-9774-cbd6f7f56ba7/ccfabf80-36e1-11ed-ada0-f1eabac4f44b/file-1l86jvqm0.png?format=png" data-orsrc="https://app-content.cdn.examgoal.net/image/1l86jvqlz/776c9877-f5bf-4f9a-9774-cbd6f7f56ba7/ccfabf80-36e1-11ed-ada0-f1eabac4f44b/fi... | mcq | jee-main-2016-offline | 1,690 |
Q7VKeI1XWxrg8kUF8NDHp | chemistry | coordination-compounds | warner's-theory-and-valence-bond-theory | Which one of the following complexes will consume more equivalents of aqueous
solution of Ag(NO<sub>3</sub>)? | [{"identifier": "A", "content": "Na<sub>3</sub>[CrCl<sub>6</sub>]\n"}, {"identifier": "B", "content": "[Cr(H<sub>2</sub>O)<sub>5</sub>Cl]Cl<sub>2</sub>"}, {"identifier": "C", "content": "[Cr(H<sub>2</sub>O)<sub>6</sub>]Cl<sub>3</sub>"}, {"identifier": "D", "content": "Na<sub>2</sub>[CrCl<sub>5</sub>(H<sub>2</sub>O)]"}] | ["C"] | null | <p>[Cr(H<sub>2</sub>O)<sub>6</sub>]Cl<sub>3</sub> has the highest primary valency among the given complexes, that is, three, therefore, it will consume three moles of AgNO<sub>3</sub> and precipitate three moles of AgCl.</p>
<p>[Cr(H<sub>2</sub>O)<sub>6</sub>]Cl<sub>3</sub> + 3AgNo<sub>3</sub> $$\to$$ 3AgCl + [Cr(H<sub... | mcq | jee-main-2016-online-9th-april-morning-slot | 1,691 |
z1kU5ZSykT5i8HUR5a1DX | chemistry | coordination-compounds | warner's-theory-and-valence-bond-theory | The correct combination is : | [{"identifier": "A", "content": "[Ni(CN)<sub>4</sub>]<sup>2-</sup> $$-$$ tetrahedral ;\n<br><br>[Ni(CO)<sub>4</sub>] $$-$$ paramagnetic"}, {"identifier": "B", "content": "[Ni(Cl)<sub>4</sub>]<sup>2-</sup> $$-$$ paramagnetic ;\n<br><br>[Ni(CO)<sub>4</sub>] $$-$$ tetrahedral"}, {"identifier": "C", "content": "[Ni(Cl)<sub... | ["B"] | null | [NiCl<sub>4</sub>]<sup>2–</sup> : Oxidation state of Ni in [NiCl<sub>4</sub>]<sup>2–</sup> = + 2
<br><img src="https://res.cloudinary.com/dckxllbjy/image/upload/v1734266574/exam_images/yme6hxlcascybyqigajb.webp" style="max-width: 100%;height: auto;display: block;margin: 0 auto;" loading="lazy" alt="JEE Main 2018 (Onli... | mcq | jee-main-2018-online-15th-april-morning-slot | 1,693 |
YTGe2XX7oM0ligefG7cFx | chemistry | coordination-compounds | warner's-theory-and-valence-bond-theory | The correct order of spin-only magnetic moments among the following is :
<br/>(Atomic number : Mn = 25, Co = 27, Ni = 28, Zn = 30) | [{"identifier": "A", "content": "[ZnCl<sub>4</sub>]<sup>2-</sup> > [NiCl<sub>4</sub>]<sup>2-</sup> > [CoCl<sub>4</sub>]<sup>2-</sup> > [MnCl<sub>4</sub>]<sup>2-</sup>"}, {"identifier": "B", "content": "[CoCl<sub>4</sub>]<sup>2-</sup> > [MnCl<sub>4</sub>]<sup>2-</sup> > [NiCl<sub>4</sub>]<sup>2-</sup> >... | ["D"] | null | We know,
<br><br>Spin only magnetic moment ($$\mu $$) = $$\sqrt {n\left( {n + 2} \right)} $$ B.M
<br><br>Where, n is the number of unpaired electrons.
<br><br>So, the complex having higher number of unpaired electrons will have higher value of spin only magnetic moment.
<br><br>(1) Zn<sup... | mcq | jee-main-2018-online-15th-april-evening-slot | 1,694 |
EAll4IJyp7ZT1pHuN8CRh | chemistry | coordination-compounds | warner's-theory-and-valence-bond-theory | In Wilkinson's catalyst, the hybridization of central metal ion and its shape are respectively : | [{"identifier": "A", "content": "sp<sup>3</sup>d, trigonal bipyramidal "}, {"identifier": "B", "content": "sp<sup>3</sup>, tetrahedral"}, {"identifier": "C", "content": "dsp<sup>2</sup>, square planar "}, {"identifier": "D", "content": "d<sup>2</sup>sp<sup>3</sup>, octahedral "}] | ["C"] | null | Wilkinson's catalyst is [RhCl(PPh<sub>3</sub>)<sub>3</sub>]
<br><br>Here central atom is Rh.
<br><br>Oxidation state of Rh here is = + 1
<br><br>$$ \therefore $$ Electronic configuration of Rh<sup>+</sup> = [Kr]4d<sup>8</sup>
<br><br><img src="https://res.cloudinary.com/dckxllbjy/image/upload/v17342652... | mcq | jee-main-2018-online-16th-april-morning-slot | 1,695 |
iuI2LTDhrKzwH2z46ifKC | chemistry | coordination-compounds | warner's-theory-and-valence-bond-theory | The calculated spin-only magnetic moments
(BM) of the anionic and cationic species of
[Fe(H<sub>2</sub>O)<sub>6</sub>]<sub>2</sub> and [Fe(CN)<sub>6</sub>], respectively, are : | [{"identifier": "A", "content": "2.84 and 5.92"}, {"identifier": "B", "content": "4.9 and 0"}, {"identifier": "C", "content": "0 and 4.9"}, {"identifier": "D", "content": "0 and 5.92"}] | ["B"] | null | Compount is Fe(H<sub>2</sub>O)<sub>6</sub>]<sub>2</sub> [Fe(CN)<sub>6</sub>]
<br><br>Cation is Fe(H<sub>2</sub>O)<sub>6</sub>]<sup>2+</sup>
<br><br>Anion is [Fe(CN)<sub>6</sub>]<sup>4-</sup>
<picture><source media="(max-width: 320px)" srcset="https://res.cloudinary.com/dckxllbjy/image/upload/v1734265087/exam_images/v3i... | mcq | jee-main-2019-online-8th-april-evening-slot | 1,696 |
EqgJ5MWVQbKw7AJZzYit0 | chemistry | coordination-compounds | warner's-theory-and-valence-bond-theory | The correct statements among I to III are :<br/>
(I) Valence bond theory cannot explain the
color exhibited by transition metal
complexes.<br/>
(II) Valence bond theory can predict
quantitatively the magnetic properties of
transtition metal complexes.<br/>
(III) Valence bond theory cannot distinguish
ligands as weak an... | [{"identifier": "A", "content": "(II) and (III) only"}, {"identifier": "B", "content": "(I) and (II) only"}, {"identifier": "C", "content": "(I), (II) and (III)"}, {"identifier": "D", "content": "(I) and (III) only"}] | ["D"] | null | <p>To determine which statements are correct, let's analyze each one individually in the context of <strong>Valence Bond Theory (VBT)</strong> as it applies to transition metal complexes.</p>
<hr />
<h3><strong>Statement (I):</strong></h3>
<p><strong>"Valence bond theory cannot explain the color exhibited by transition... | mcq | jee-main-2019-online-9th-april-evening-slot | 1,697 |
OUtaGWaKrVIRiBLKUMfw6 | chemistry | coordination-compounds | warner's-theory-and-valence-bond-theory | The metal d-orbitals that are directly facing the ligands in K<sub>3</sub>[Co(CN)<sub>6</sub>] are - | [{"identifier": "A", "content": "d<sub>x<sup>2</sup></sub><sub>$$-$$y<sup>2</sup></sub> and d<sub>z<sup>2</sup></sub>"}, {"identifier": "B", "content": "d<sub>xy</sub>, d<sub>xz</sub> and d<sub>yz </sub>"}, {"identifier": "C", "content": "d<sub>xz</sub>, d<sub>yz</sub> and d<sub>z<sup>2</sup> </sub>"}, {"identifier": "... | ["A"] | null | Due to presence of strong field ligand (CN<sup>–</sup>) pairing occurs
in which two d-orbitals i.e., d<sub>x<sup>2</sup>–y<sup>2</sup></sub> and d<sub>z<sup>2</sup></sub> directly face the CN<sup>-</sup>
ligand.
| mcq | jee-main-2019-online-12th-january-morning-slot | 1,698 |
DwWbP3BYMHmPulSs8YQtZ | chemistry | coordination-compounds | warner's-theory-and-valence-bond-theory | The difference in the number of unpaired electrons of a metal ion in its high spin and low-spin octahedral complexes is two. The metal ion is : | [{"identifier": "A", "content": "Mn<sup>2+</sup> "}, {"identifier": "B", "content": "Ni<sup>2+</sup>"}, {"identifier": "C", "content": "Co<sup>2+</sup>"}, {"identifier": "D", "content": "Fe<sup>2+</sup>"}] | ["C"] | null | <picture><source media="(max-width: 320px)" srcset="https://res.cloudinary.com/dckxllbjy/image/upload/v1734266615/exam_images/kqmrzuhzmrizil5pwwjn.webp"><source media="(max-width: 500px)" srcset="https://res.cloudinary.com/dckxllbjy/image/upload/v1734264192/exam_images/ilsm8bfvmp9d0msdkfoh.webp"><img src="https://res.c... | mcq | jee-main-2019-online-10th-january-evening-slot | 1,699 |
zOQUVaJo6QRX1LvRXWjgy2xukevh5zy7 | chemistry | coordination-compounds | warner's-theory-and-valence-bond-theory | For octahedral Mn(II) and tetrahedral Ni(II)
complexes, consider the following statements:
<br/><br/>(I) both the complexes can be high spin.
<br/>(II) Ni(II) complex can very rarely be low spin.
<br/>(III) with strong field ligands, Mn(II) complexes
can be low spin.
<br/>(IV)aqueous solution of Mn(II) ions is yellow i... | [{"identifier": "A", "content": "(I), (III) and (IV) only"}, {"identifier": "B", "content": "(I) and (II) only"}, {"identifier": "C", "content": "(II), (III) and (IV) only"}, {"identifier": "D", "content": "(I), (II) and (III) only"}] | ["D"] | null | (I) Under weak field ligand, octahedral Mn(II) and tetrahedral Ni(II) both the complexes are high spin
complex.
<br><br>(II) Tetrahedral Ni(II) complex can very rarely be low spin because square planar (under strong ligand)
complexes of Ni(II) are low spin complexes.
<br><br>(III)With strong field ligands Mn (II) compl... | mcq | jee-main-2020-online-2nd-september-morning-slot | 1,702 |
ZasO1dmCZvKvS5eZ86jgy2xukf9juj6x | chemistry | coordination-compounds | warner's-theory-and-valence-bond-theory | The pair in which both the species have the
same magnetic moment (spin only) is : | [{"identifier": "A", "content": "[Cr(H<sub>2</sub>O)<sub>6</sub>]<sup>2+</sup> and [CoCl<sub>4</sub>]<sup>2\u2013</sup>"}, {"identifier": "B", "content": "[Co(OH)<sub>4</sub>]<sup>2\u2013</sup> and [Fe(NH<sub>3</sub>)<sub>6</sub>]<sup>2+</sup>"}, {"identifier": "C", "content": "[Mn(H<sub>2</sub>O)<sub>6</sub>]<sup>2+</... | ["D"] | null | Species with same number of unpaired
electrons have equal magnetic moment.
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... | mcq | jee-main-2020-online-4th-september-morning-slot | 1,703 |
L0VS4HVimhCxFQFW0sjgy2xukfcf82dc | chemistry | coordination-compounds | warner's-theory-and-valence-bond-theory | The molecule in which hybrid MOs involve only
one d-orbital of the central atom is : | [{"identifier": "A", "content": "XeF<sub>4</sub>"}, {"identifier": "B", "content": "[Ni(CN)<sub>4</sub>]<sup>2\u2013</sup>"}, {"identifier": "C", "content": "[CrF<sub>6</sub>]<sup>3\u2013</sup>"}, {"identifier": "D", "content": "BrF<sub>5</sub>"}] | ["B"] | null | XeF<sub>4</sub> = sp<sup>3</sup>d<sup>2</sup>
<br><br>[Ni(CN)<sub>4</sub>]<sup>2–</sup> = dsp<sup>2</sup>
<br><br>[CrF<sub>6</sub>]<sup>3–</sup> = d<sup>2</sup>sp<sup>2</sup>
<br><br>BrF<sub>5</sub> = sp<sup>3</sup>d<sup>2</sup> | mcq | jee-main-2020-online-4th-september-evening-slot | 1,704 |
SgQsFCyYe575cK39zIjgy2xukftb36fy | chemistry | coordination-compounds | warner's-theory-and-valence-bond-theory | The species that has a spin-only magnetic
moment of 5.9 BM, is :
<br/>(T<sub>d</sub> = tetrahedral) | [{"identifier": "A", "content": "[MnBr<sub>4</sub>]<sup>2\u2013</sup> (T<sub>d</sub>)"}, {"identifier": "B", "content": "[NiCl<sub>4</sub>]<sup>2\u2013</sup> (T<sub>d</sub>)"}, {"identifier": "C", "content": "Ni(CO)<sub>4</sub> (T<sub>d</sub>)"}, {"identifier": "D", "content": "[Ni(CN)<sub>4</sub>]<sup>2\u2013</sup> (s... | ["A"] | null | <img src="https://res.cloudinary.com/dckxllbjy/image/upload/v1734265112/exam_images/zeuyeuoeiqgozh5eoiqf.webp" style="max-width: 100%;height: auto;display: block;margin: 0 auto;" loading="lazy" alt="JEE Main 2020 (Online) 6th September Morning Slot Chemistry - Coordination Compounds Question 167 English Explanation">
<... | mcq | jee-main-2020-online-6th-september-morning-slot | 1,705 |
iGJEzyo9vo7mWRQwjv1kls99g04 | chemistry | coordination-compounds | warner's-theory-and-valence-bond-theory | The hybridization and magnetic nature of $${[Mn{(CN)_6}]^{4 - }}$$ and $${[Fe{(CN)_6}]^{3 - }}$$, respectively are : | [{"identifier": "A", "content": "sp<sup>3</sup>d<sup>2</sup> and diamagnetic"}, {"identifier": "B", "content": "d<sup>2</sup>sp<sup>3</sup> and paramagnetic"}, {"identifier": "C", "content": "sp<sup>3</sup>d<sup>2</sup> and paramagnetic "}, {"identifier": "D", "content": "d<sup>2</sup>sp<sup>3</sup> and diamagnetic"}] | ["B"] | null | $${[Mn{(CN)_6}]^{4 - }}$$
<br><br>Mn<sup>2+</sup> = 3d<sup>5</sup> 4s<sup>0</sup>
<br><br>CN<sup>–</sup> is a strong field ligand.
<br><br>$$ \therefore $$ Pairing will occur.
<br><img src="https://res.cloudinary.com/dckxllbjy/image/upload/v1734265510/exam_images/d5j8oj74mjjgyahgkgyg.webp" style="max-width: 100%;height... | mcq | jee-main-2021-online-25th-february-morning-slot | 1,706 |
KUZ5uhS8NaNi6g5iLt1kltb3bda | chemistry | coordination-compounds | warner's-theory-and-valence-bond-theory | In which of the following order the given complex ions are arranged correctly with respect to their decreasing spin only magnetic moment?<br/><br/>(i) [FeF<sub>6</sub>]<sup>3$$-$$</sup><br/><br/>(ii) [Co(NH<sub>3</sub>)<sub>6</sub>]<sup>3+</sup><br/><br/>(iii) [NiCl<sub>4</sub>]<sup>2$$-$$</sup><br/><br/>(iv) [Cu(NH<su... | [{"identifier": "A", "content": "(iii) > (iv) > (ii) > (i)"}, {"identifier": "B", "content": "(ii) > (iii) > (i) > (iv)"}, {"identifier": "C", "content": "(i) > (iii) > (iv) > (ii)"}, {"identifier": "D", "content": "(ii) > (i) > (iii) > (iv)"}] | ["C"] | null | <p>Spin only magnetic moment, $$\mu = \sqrt {n(n + 2)} BM$$</p>
<p>where, n = number of unpaired electrons and $$\mu$$ $$\propto$$ n.</p>
<p>(i) $${[Fe{F_6}]^{3 - }} \Rightarrow F{e^{3 + }} = (3{d^5}) , {F^ - }$$ (weak field ligand).</p>
<p>Thus, pairing of electron does not take place.</p>
<p> <img src="https://app-c... | mcq | jee-main-2021-online-25th-february-evening-slot | 1,707 |
FqGRwI4XzJ9WzHkQ7v1kltc4ylc | chemistry | coordination-compounds | warner's-theory-and-valence-bond-theory | The spin only magnetic moment of a divalent ion in aqueous solution (atomic number 29) is _________ BM. | [] | null | 2 | <p>Z = 29 [Cu] $$\buildrel { - 2{e^ - }} \over
\longrightarrow $$ Cu<sup>2+</sup> = [Ar] 3d<sup>9</sup></p>
<p><img src="https://app-content.cdn.examgoal.net/fly/@width/image/1l3ofkk4y/cbc2d309-3d8d-4064-8375-8b1cec6939d4/f85b3d20-ddb9-11ec-b7c7-a7ac6d9334e0/file-1l3ofkk4z.png?format=png" data-orsrc="https://app-conte... | integer | jee-main-2021-online-25th-february-evening-slot | 1,708 |
Bcpwk8KChYg6mPuCFE1kmkjcqy8 | chemistry | coordination-compounds | warner's-theory-and-valence-bond-theory | On complete reaction of FeCl<sub>3</sub> with oxalic acid in aqueous solution containing KOH, resulted in the formation of product A. The secondary valency of Fe in the product A is __________. (Round off to the Nearest Integer). | [] | null | 6 | FeCl<sub>3</sub> + 3H<sub>2</sub>C<sub>2</sub>O<sub>4</sub> + 6KOH $$ \to $$ K<sub>3</sub>[Fe(C<sub>2</sub>O<sub>4</sub>)<sub>3</sub>] + 3KCl + 6H<sub>2</sub>O
<img src="https://res.cloudinary.com/dckxllbjy/image/upload/v1734265316/exam_images/jhlad4ljjvhuzuxesaik.webp" style="max-width: 100%;height: auto;display: bloc... | integer | jee-main-2021-online-17th-march-evening-shift | 1,709 |
1krq52f6z | chemistry | coordination-compounds | warner's-theory-and-valence-bond-theory | According to the valence bond theory the hybridization of central metal atom is dsp<sup>2</sup> for which one of the following compounds? | [{"identifier": "A", "content": "$$NiC{l_2}.6{H_2}O$$"}, {"identifier": "B", "content": "$${K_2}[Ni{(CN)_4}]$$"}, {"identifier": "C", "content": "$$[Ni{(CO)_4}]$$"}, {"identifier": "D", "content": "$$N{a_2}[NiC{l_4}]$$"}] | ["B"] | null | According to VBT i.e. valence bond theory, <br><br>Electronic configuration of Ni = [Ar]3d<sup>8</sup>4s<sup>2</sup>.<br><br>(a) NiCl<sub>2</sub> . 6H<sub>2</sub>O<br><br>NiCl<sub>2</sub> . 6H<sub>2</sub>O $$\rightarrow$$ NiCl<sub>2</sub> + 6H<sub>2</sub>O<br><br>Oxidation number of Ni(x) = x + 2($$-$$1) = 0; where x, ... | mcq | jee-main-2021-online-20th-july-morning-shift | 1,710 |
1krq6hk3g | chemistry | coordination-compounds | warner's-theory-and-valence-bond-theory | The spin-only magnetic moment value for the complex [Co(CN)<sub>6</sub>]<sup>4$$-$$</sup> is __________ BM.<br/><br/>[At. no. of Co = 27] | [] | null | 2 | [Co(CN)<sub>6</sub>]<sup>4$$-$$</sup><br><br>x + 6 $$\times$$ ($$-$$1) = $$-$$4<br><br>where, x, 6, $$-$$1 and $$-$$4 are the oxidation number of Co, number of CN ligands, charge on one CN and charge on complex.<br><br>x = +2, i.e. Co<sup>2+</sup><br><br>Electronic configuration of Co<sup>2+</sup> : [Ar]3d<sup>7</sup> ... | integer | jee-main-2021-online-20th-july-morning-shift | 1,711 |
1krri1uc9 | chemistry | coordination-compounds | warner's-theory-and-valence-bond-theory | Spin only magnetic moment of an octahedral complex of Fe<sup>2+</sup> in the presence of a strong field ligand in BM is : | [{"identifier": "A", "content": "4.89"}, {"identifier": "B", "content": "2.82"}, {"identifier": "C", "content": "0"}, {"identifier": "D", "content": "3.46"}] | ["C"] | null | In presence of SFL $$\Delta$$<sub>0</sub> > P means pairing occurs therefore<br><br>For Fe<sup>+2</sup> $$\to$$ 3d<sup>6</sup><br><br> <picture><source media="(max-width: 320px)" srcset="https://res.cloudinary.com/dckxllbjy/image/upload/v1734264059/exam_images/lbwwmbtbzsltgv8efirt.webp"><source media="(max-width: 50... | mcq | jee-main-2021-online-20th-july-evening-shift | 1,712 |
1krri3h2e | chemistry | coordination-compounds | warner's-theory-and-valence-bond-theory | Which one of the following species doesn't have a magnetic moment of 1.73 BM, (spin only value)? | [{"identifier": "A", "content": "O$$_2^ + $$"}, {"identifier": "B", "content": "CuI"}, {"identifier": "C", "content": "[Cu(NH<sub>3</sub>)<sub>4</sub>]Cl<sub>2</sub>"}, {"identifier": "D", "content": "O$$_2^ - $$"}] | ["B"] | null | Species does not have a magnetic moment of 1.7 BM means species must not contain single unpaired electron.<br/><br/>(a) Molecular orbital configuration of O$$_2^ + $$ (15 electrons) is
<br><br>$${\sigma _{1{s^2}}}\,\sigma _{1{s^2}}^ * \,{\sigma _{2{s^2}}}\,\sigma _{2{s^2}}^ * \,{\sigma _{2p_z^2}}\,{\pi _{2p_x^2}}\, = ... | mcq | jee-main-2021-online-20th-july-evening-shift | 1,713 |
1krrlkpk9 | chemistry | coordination-compounds | warner's-theory-and-valence-bond-theory | An aqueous solution of NiCl<sub>2</sub> was heated with excess sodium cyanide in presence of strong oxidizing agent to form [Ni(CN)<sub>6</sub>]<sup>2$$-$$</sup>. The total change in number of unpaired electrons on metal centre is _______________. | [] | null | 2 | [Ni(CN)<sub>6</sub>]<sup>2-</sup><br><br>Ni<sup>+4</sup> $$\to$$ d<sup>6</sup>, CN<sup>-</sup> strong field ligand. So pairing will happen.<br><br> <picture><source media="(max-width: 320px)" srcset="https://res.cloudinary.com/dckxllbjy/image/upload/v1734266730/exam_images/hzhwvldmepx5aweooxep.webp"><source media="(max... | integer | jee-main-2021-online-20th-july-evening-shift | 1,714 |
1krz0epef | chemistry | coordination-compounds | warner's-theory-and-valence-bond-theory | The type of hybridisation and magnetic property of the complex [MnCl<sub>6</sub>]<sup>3$$-$$</sup>, respectively, are : | [{"identifier": "A", "content": "sp<sup>3</sup>d<sup>2</sup> and diamagnetic"}, {"identifier": "B", "content": "d<sup>2</sup>sp<sup>3</sup> and diamagnetic"}, {"identifier": "C", "content": "d<sup>2</sup>sp<sup>3</sup> and paramagnetic"}, {"identifier": "D", "content": "sp<sup>3</sup>d<sup>2</sup> and paramagnetic"}] | ["D"] | null | [MnCl<sub>6</sub>]<sup>3$$-$$</sup><br><br><img src="https://res.cloudinary.com/dckxllbjy/image/upload/v1734263750/exam_images/unrjdrvkd9etnm40aeza.webp" style="max-width: 100%;height: auto;display: block;margin: 0 auto;" loading="lazy" alt="JEE Main 2021 (Online) 27th July Morning Shift Chemistry - Coordination Compou... | mcq | jee-main-2021-online-27th-july-morning-shift | 1,716 |
1ks1hr11y | chemistry | coordination-compounds | warner's-theory-and-valence-bond-theory | Given below are two statements :<br/><br/>Statement I : $${[Mn{(CN)_6}]^{3 - }}$$, $${[Fe{(CN)_6}]^{3 - }}$$ and $${[Co{({C_2}{O_4})_3}]^{3 - }}$$ are d<sup>2</sup>sp<sup>3</sup> hybridised.<br/><br/>Statement II : $${[MnCl)_6}{]^{3 - }}$$ and $${[Fe{F_6}]^{3 - }}$$ are paramagnetic and have 4 and 5 unpaired electrons,... | [{"identifier": "A", "content": "Statement I is correct but statement II is false"}, {"identifier": "B", "content": "Both statement I and Statement II are false"}, {"identifier": "C", "content": "Statement I is incorrect but statement II is true"}, {"identifier": "D", "content": "Both statement I and statement II are t... | ["D"] | null | <p>Hybridization of all the given complexes are given in following table.</p>
<p>$${[Mn{(CN)_6}]^{3 - }} \Rightarrow M{n^{3 + }}$$</p>
<p>CN<sup>$$-$$</sup> is a strong field ligand.</p>
<p>$$\therefore$$ Pairing of electron takes place.</p>
<p><img src="https://app-content.cdn.examgoal.net/fly/@width/image/1l0b1g8gl/1... | mcq | jee-main-2021-online-27th-july-evening-shift | 1,717 |
1ktcss601 | chemistry | coordination-compounds | warner's-theory-and-valence-bond-theory | The overall stability constant of the complex ion [Cu(NH<sub>3</sub>)<sub>4</sub>]<sup>2+</sup> is 2.1 $$\times$$ 10<sup>13</sup>. The overall dissociations constant is y $$\times$$ 10<sup>$$-$$14</sup>. Then y is __________. (Nearest integer) | [] | null | 5 | <img src="https://res.cloudinary.com/dckxllbjy/image/upload/v1734263653/exam_images/yspafbpbvdyz3rcwl7sr.webp" style="max-width: 100%;height: auto;display: block;margin: 0 auto;" loading="lazy" alt="JEE Main 2021 (Online) 26th August Evening Shift Chemistry - Coordination Compounds Question 136 English Explanation">
<b... | integer | jee-main-2021-online-26th-august-evening-shift | 1,718 |
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