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- let 's talk a little bit about groups of the periodic table . now , a very simple way to think about groups is that they just are the columns of the periodic table , and the standard convention is to number them . this is the first column , so that 's group one , second column , third group , fourth , fifth , sixth ,... | let 's just think a little about some of the groups that you will hear about and why they react in very similar ways . if we go with group one , group one ... and hydrogen is a little bit of a strange character because hydrogen is n't trying to get to eight valence electrons . hydrogen in that first shell just wants to... | is hydrogen always cosidered a group 1 element ? |
- let 's talk a little bit about groups of the periodic table . now , a very simple way to think about groups is that they just are the columns of the periodic table , and the standard convention is to number them . this is the first column , so that 's group one , second column , third group , fourth , fifth , sixth ,... | once again , it has one valence electron , one electron in its outermost shell . all of these elements in orange right over here , they have one valence electron and they 're trying to get to the octet rule , this kind of stable nirvana for atoms . you could imagine is that they 're very reactive and when they react th... | what does sal mean by the `` octet rule '' ? |
- let 's talk a little bit about groups of the periodic table . now , a very simple way to think about groups is that they just are the columns of the periodic table , and the standard convention is to number them . this is the first column , so that 's group one , second column , third group , fourth , fifth , sixth ,... | once again , it has one valence electron , one electron in its outermost shell . all of these elements in orange right over here , they have one valence electron and they 're trying to get to the octet rule , this kind of stable nirvana for atoms . you could imagine is that they 're very reactive and when they react th... | in fact , what is the octet rule ? |
- let 's talk a little bit about groups of the periodic table . now , a very simple way to think about groups is that they just are the columns of the periodic table , and the standard convention is to number them . this is the first column , so that 's group one , second column , third group , fourth , fifth , sixth ,... | now something interesting happens as you go to the d block . we studied this when we looked at electron configurations , but if you look at the electron configuration for say scandium right over here , the electron , let me do it in magenta , the electron configuration for scandium , so scandium , scandium 's electron ... | 5 , why is scandium 's electron configuration the same as argon 's ? |
- let 's talk a little bit about groups of the periodic table . now , a very simple way to think about groups is that they just are the columns of the periodic table , and the standard convention is to number them . this is the first column , so that 's group one , second column , third group , fourth , fifth , sixth ,... | well , to think about that you just have to think about their electron configurations . for example , the electron configuration for lithium is going to be the same as the electron configuration of helium , of helium . then you 're going to go to your second shell , 2s1 . | how is the electronic configuration of lithium the same as the electronic configuration of helium ? |
- let 's talk a little bit about groups of the periodic table . now , a very simple way to think about groups is that they just are the columns of the periodic table , and the standard convention is to number them . this is the first column , so that 's group one , second column , third group , fourth , fifth , sixth ,... | well , in its second shell , its outermost shell , it has two plus two . it has four valence electrons . that 's going to be true for the things in this group . | why does not helium has 2 valence electrons ? |
- let 's talk a little bit about groups of the periodic table . now , a very simple way to think about groups is that they just are the columns of the periodic table , and the standard convention is to number them . this is the first column , so that 's group one , second column , third group , fourth , fifth , sixth ,... | then we start filling the d block . these are the d block elements here . you have to remember , the d block you backfill . in the d block , this is going to be now 3s1 . | why do you have to backfill the d-block electrons ? |
- let 's talk a little bit about groups of the periodic table . now , a very simple way to think about groups is that they just are the columns of the periodic table , and the standard convention is to number them . this is the first column , so that 's group one , second column , third group , fourth , fifth , sixth ,... | so 2p2 . how many valence electrons does it have ? well , in its second shell , its outermost shell , it has two plus two . | how do you know how many electrons are in an elment ? |
- let 's talk a little bit about groups of the periodic table . now , a very simple way to think about groups is that they just are the columns of the periodic table , and the standard convention is to number them . this is the first column , so that 's group one , second column , third group , fourth , fifth , sixth ,... | these right over here are the alkali . alkali metals . now why do all of these have very similar reactions ? | what are the differences between alkali metals and alkaline earth metals ? |
- let 's talk a little bit about groups of the periodic table . now , a very simple way to think about groups is that they just are the columns of the periodic table , and the standard convention is to number them . this is the first column , so that 's group one , second column , third group , fourth , fifth , sixth ,... | now , a very simple way to think about groups is that they just are the columns of the periodic table , and the standard convention is to number them . this is the first column , so that 's group one , second column , third group , fourth , fifth , sixth , seventh , eighth , group nine , group 10 , 11 , 12 , 13 , 14 15... | why is helium in group one when it has vastly different properties ? |
- let 's talk a little bit about groups of the periodic table . now , a very simple way to think about groups is that they just are the columns of the periodic table , and the standard convention is to number them . this is the first column , so that 's group one , second column , third group , fourth , fifth , sixth ,... | now something interesting happens as you go to the d block . we studied this when we looked at electron configurations , but if you look at the electron configuration for say scandium right over here , the electron , let me do it in magenta , the electron configuration for scandium , so scandium , scandium 's electron ... | what does electron configuration mean ? |
- let 's talk a little bit about groups of the periodic table . now , a very simple way to think about groups is that they just are the columns of the periodic table , and the standard convention is to number them . this is the first column , so that 's group one , second column , third group , fourth , fifth , sixth ,... | once again its outermost shell is its fourth shell , is its fourth shell . these are , you could argue , higher energy electrons that fills this ... these are filled before that , and there are exceptions to this especially that we see a lot in the d block . | the energy of 4s electrons is lower than 3d electrons ? |
- let 's talk a little bit about groups of the periodic table . now , a very simple way to think about groups is that they just are the columns of the periodic table , and the standard convention is to number them . this is the first column , so that 's group one , second column , third group , fourth , fifth , sixth ,... | well , to think about that you just have to think about their electron configurations . for example , the electron configuration for lithium is going to be the same as the electron configuration of helium , of helium . then you 're going to go to your second shell , 2s1 . | what if you have for example krypton kr what would electron configuration be ? |
- let 's talk a little bit about groups of the periodic table . now , a very simple way to think about groups is that they just are the columns of the periodic table , and the standard convention is to number them . this is the first column , so that 's group one , second column , third group , fourth , fifth , sixth ,... | how many electrons does it have in its outermost shell ? once again its outermost shell is its fourth shell , is its fourth shell . these are , you could argue , higher energy electrons that fills this ... | helium or the 2s^2 shell ? |
- let 's talk a little bit about groups of the periodic table . now , a very simple way to think about groups is that they just are the columns of the periodic table , and the standard convention is to number them . this is the first column , so that 's group one , second column , third group , fourth , fifth , sixth ,... | well , to think about that you just have to think about their electron configurations . for example , the electron configuration for lithium is going to be the same as the electron configuration of helium , of helium . then you 're going to go to your second shell , 2s1 . | why does lithium have the same electron configuration as helium ? |
- let 's talk a little bit about groups of the periodic table . now , a very simple way to think about groups is that they just are the columns of the periodic table , and the standard convention is to number them . this is the first column , so that 's group one , second column , third group , fourth , fifth , sixth ,... | that 's because the elements in a column , or the elements in a group tend to have the same number of electrons in their outermost shell . they tend to have the same number of valence electrons . and valence electrons are electrons in the outermost shell they tend to coincide , although there 's a slightly different va... | first off , how does the number of valence electrons in noble gases relate to the number of valence electrons in any other element ? |
- let 's talk a little bit about groups of the periodic table . now , a very simple way to think about groups is that they just are the columns of the periodic table , and the standard convention is to number them . this is the first column , so that 's group one , second column , third group , fourth , fifth , sixth ,... | they tend to have the same number of valence electrons . and valence electrons are electrons in the outermost shell they tend to coincide , although there 's a slightly different variation . the valence electrons , these are the electrons that are going to react , which tend to be the outermost shell electrons , but th... | then , how does aragon , for example , remain a noble gas if it needs either 10 or 28 electrons to fill its outer shell ? |
- let 's talk a little bit about groups of the periodic table . now , a very simple way to think about groups is that they just are the columns of the periodic table , and the standard convention is to number them . this is the first column , so that 's group one , second column , third group , fourth , fifth , sixth ,... | it has one electron in its outermost shell . what about sodium ? well , sodium is going to have the same electron configuration as neon . | it is said that the peroxides are paramagnetic in nature and are colourless.but the sodium peroxides seems to have a yellow colour .why ? |
- let 's talk a little bit about groups of the periodic table . now , a very simple way to think about groups is that they just are the columns of the periodic table , and the standard convention is to number them . this is the first column , so that 's group one , second column , third group , fourth , fifth , sixth ,... | - let 's talk a little bit about groups of the periodic table . now , a very simple way to think about groups is that they just are the columns of the periodic table , and the standard convention is to number them . | why does not hydrogen have a fixed place at all in the periodic table ? |
- let 's talk a little bit about groups of the periodic table . now , a very simple way to think about groups is that they just are the columns of the periodic table , and the standard convention is to number them . this is the first column , so that 's group one , second column , third group , fourth , fifth , sixth ,... | hydrogen in that first shell just wants to get to two valence electrons like helium has . hydrogen is kind of ... it does n't share as much in common with everything else in group one as you might expect for , say , all of the things in group two . | why is hydrogen not placed with the other gasses of its type on the ptote ( c , n , o , p , s , se ) ? |
- let 's talk a little bit about groups of the periodic table . now , a very simple way to think about groups is that they just are the columns of the periodic table , and the standard convention is to number them . this is the first column , so that 's group one , second column , third group , fourth , fifth , sixth ,... | they would love nothing more than to get one more valence electron . they love to react . in fact , they especially love to react with the alkali metals over here . | how come these things seem not to react in our everyday lives ? |
- let 's talk a little bit about groups of the periodic table . now , a very simple way to think about groups is that they just are the columns of the periodic table , and the standard convention is to number them . this is the first column , so that 's group one , second column , third group , fourth , fifth , sixth ,... | it has one electron in its outermost shell . what about sodium ? well , sodium is going to have the same electron configuration as neon . | how come sodium stays as sodium when it could become neon easily ? |
- let 's talk a little bit about groups of the periodic table . now , a very simple way to think about groups is that they just are the columns of the periodic table , and the standard convention is to number them . this is the first column , so that 's group one , second column , third group , fourth , fifth , sixth ,... | let me emphasize that . we 're backfilling the d block . but these , their outermost electrons are in ... | what is d block , s block , p block ? |
- let 's talk a little bit about groups of the periodic table . now , a very simple way to think about groups is that they just are the columns of the periodic table , and the standard convention is to number them . this is the first column , so that 's group one , second column , third group , fourth , fifth , sixth ,... | this is the first column , so that 's group one , second column , third group , fourth , fifth , sixth , seventh , eighth , group nine , group 10 , 11 , 12 , 13 , 14 15 , 16 , 17 , and 18 . as some of ya 'll might be thinking , what about these f block elements over here ? if we were to properly do the periodic table w... | what is s p d f ? |
- let 's talk a little bit about groups of the periodic table . now , a very simple way to think about groups is that they just are the columns of the periodic table , and the standard convention is to number them . this is the first column , so that 's group one , second column , third group , fourth , fifth , sixth ,... | so 2p2 . how many valence electrons does it have ? well , in its second shell , its outermost shell , it has two plus two . | how many valence electrons in the f block elements ? |
- let 's talk a little bit about groups of the periodic table . now , a very simple way to think about groups is that they just are the columns of the periodic table , and the standard convention is to number them . this is the first column , so that 's group one , second column , third group , fourth , fifth , sixth ,... | now , a very simple way to think about groups is that they just are the columns of the periodic table , and the standard convention is to number them . this is the first column , so that 's group one , second column , third group , fourth , fifth , sixth , seventh , eighth , group nine , group 10 , 11 , 12 , 13 , 14 15... | can i please know the fifth state of matter ? |
- let 's talk a little bit about groups of the periodic table . now , a very simple way to think about groups is that they just are the columns of the periodic table , and the standard convention is to number them . this is the first column , so that 's group one , second column , third group , fourth , fifth , sixth ,... | they tend to have the same number of valence electrons . and valence electrons are electrons in the outermost shell they tend to coincide , although there 's a slightly different variation . the valence electrons , these are the electrons that are going to react , which tend to be the outermost shell electrons , but th... | why are different blocks used ? |
- let 's talk a little bit about groups of the periodic table . now , a very simple way to think about groups is that they just are the columns of the periodic table , and the standard convention is to number them . this is the first column , so that 's group one , second column , third group , fourth , fifth , sixth ,... | well , to think about that you just have to think about their electron configurations . for example , the electron configuration for lithium is going to be the same as the electron configuration of helium , of helium . then you 're going to go to your second shell , 2s1 . | hydrogen tries to get the electron configuration of its nearest noble gas helium , then how come lithium does n't behave the same way ? |
- let 's talk a little bit about groups of the periodic table . now , a very simple way to think about groups is that they just are the columns of the periodic table , and the standard convention is to number them . this is the first column , so that 's group one , second column , third group , fourth , fifth , sixth ,... | they tend to have the same number of valence electrons . and valence electrons are electrons in the outermost shell they tend to coincide , although there 's a slightly different variation . the valence electrons , these are the electrons that are going to react , which tend to be the outermost shell electrons , but th... | are n't the valence electrons the same as the electrons on the outermost shell ? |
- let 's talk a little bit about groups of the periodic table . now , a very simple way to think about groups is that they just are the columns of the periodic table , and the standard convention is to number them . this is the first column , so that 's group one , second column , third group , fourth , fifth , sixth ,... | because they 're so reactive it 's hard to find them where they have n't reacted with other things . let 's keep looking at the other groups . if we move one over to the right this group two right over here , these are called the alkaline earth metals . | sal has 18 groups why ? |
- let 's talk a little bit about groups of the periodic table . now , a very simple way to think about groups is that they just are the columns of the periodic table , and the standard convention is to number them . this is the first column , so that 's group one , second column , third group , fourth , fifth , sixth ,... | for example , the electron configuration for lithium is going to be the same as the electron configuration of helium , of helium . then you 're going to go to your second shell , 2s1 . it has one valence electron . | what does sal meant , when he said javascript : void 0 javascript : void 0 , what does li : [ he ] 2s1 means ? |
- let 's talk a little bit about groups of the periodic table . now , a very simple way to think about groups is that they just are the columns of the periodic table , and the standard convention is to number them . this is the first column , so that 's group one , second column , third group , fourth , fifth , sixth ,... | they do n't find the need . they 're noble . they 're kind of above the fray . | so the noble gasses do not react ? |
- let 's talk a little bit about groups of the periodic table . now , a very simple way to think about groups is that they just are the columns of the periodic table , and the standard convention is to number them . this is the first column , so that 's group one , second column , third group , fourth , fifth , sixth ,... | - let 's talk a little bit about groups of the periodic table . now , a very simple way to think about groups is that they just are the columns of the periodic table , and the standard convention is to number them . | whta are the lanthanides and actinides ? |
- let 's talk a little bit about groups of the periodic table . now , a very simple way to think about groups is that they just are the columns of the periodic table , and the standard convention is to number them . this is the first column , so that 's group one , second column , third group , fourth , fifth , sixth ,... | - let 's talk a little bit about groups of the periodic table . now , a very simple way to think about groups is that they just are the columns of the periodic table , and the standard convention is to number them . | can somebody please explain the notation ? |
- let 's talk a little bit about groups of the periodic table . now , a very simple way to think about groups is that they just are the columns of the periodic table , and the standard convention is to number them . this is the first column , so that 's group one , second column , third group , fourth , fifth , sixth ,... | in the d block , this is going to be now 3s1 . how many electrons does it have in its outermost shell ? once again its outermost shell is its fourth shell , is its fourth shell . | in outer most shell of scandium , how many electrons are present ? |
- let 's talk a little bit about groups of the periodic table . now , a very simple way to think about groups is that they just are the columns of the periodic table , and the standard convention is to number them . this is the first column , so that 's group one , second column , third group , fourth , fifth , sixth ,... | these right over here are the alkali . alkali metals . now why do all of these have very similar reactions ? | why are half of the lanthanides and actinides separated out from the table at the bottom while the other half is right below the transition metals ? |
- let 's talk a little bit about groups of the periodic table . now , a very simple way to think about groups is that they just are the columns of the periodic table , and the standard convention is to number them . this is the first column , so that 's group one , second column , third group , fourth , fifth , sixth ,... | it does n't share as much in common with everything else in group one as you might expect for , say , all of the things in group two . group one , if you put hydrogen aside , these are referred to as the alkali metals . and hydrogen is not considered an alkali metal . | why does sal put a different element into brackets ? |
- let 's talk a little bit about groups of the periodic table . now , a very simple way to think about groups is that they just are the columns of the periodic table , and the standard convention is to number them . this is the first column , so that 's group one , second column , third group , fourth , fifth , sixth ,... | well , in its second shell , its outermost shell , it has two plus two . it has four valence electrons . that 's going to be true for the things in this group . | it 's a little unclear to me , are there 2 valence electrons here ( as he seems to indicate ) , or are there 3 valence electrons here ( following the pattern set by the previous examples where it appears the electrons following the noble gas in the noble gas notation are the valence electrons ) ? |
- let 's talk a little bit about groups of the periodic table . now , a very simple way to think about groups is that they just are the columns of the periodic table , and the standard convention is to number them . this is the first column , so that 's group one , second column , third group , fourth , fifth , sixth ,... | - let 's talk a little bit about groups of the periodic table . now , a very simple way to think about groups is that they just are the columns of the periodic table , and the standard convention is to number them . | why does the periodic table have 2 parts and there have all theis numbers every where ? |
- let 's talk a little bit about groups of the periodic table . now , a very simple way to think about groups is that they just are the columns of the periodic table , and the standard convention is to number them . this is the first column , so that 's group one , second column , third group , fourth , fifth , sixth ,... | - let 's talk a little bit about groups of the periodic table . now , a very simple way to think about groups is that they just are the columns of the periodic table , and the standard convention is to number them . | why does my periodic table have slightly different groups ? |
- let 's talk a little bit about groups of the periodic table . now , a very simple way to think about groups is that they just are the columns of the periodic table , and the standard convention is to number them . this is the first column , so that 's group one , second column , third group , fourth , fifth , sixth ,... | these alkali metals are very , very reactive . actually they have very similar properties . they 're shiny and soft . | does pb has the properties of carbon ? |
- let 's talk a little bit about groups of the periodic table . now , a very simple way to think about groups is that they just are the columns of the periodic table , and the standard convention is to number them . this is the first column , so that 's group one , second column , third group , fourth , fifth , sixth ,... | it does n't share as much in common with everything else in group one as you might expect for , say , all of the things in group two . group one , if you put hydrogen aside , these are referred to as the alkali metals . and hydrogen is not considered an alkali metal . | why do people put a line through 7 ? |
- let 's talk a little bit about groups of the periodic table . now , a very simple way to think about groups is that they just are the columns of the periodic table , and the standard convention is to number them . this is the first column , so that 's group one , second column , third group , fourth , fifth , sixth ,... | it does n't share as much in common with everything else in group one as you might expect for , say , all of the things in group two . group one , if you put hydrogen aside , these are referred to as the alkali metals . and hydrogen is not considered an alkali metal . | and why does sal put brackets around `` he '' ? |
- let 's talk a little bit about groups of the periodic table . now , a very simple way to think about groups is that they just are the columns of the periodic table , and the standard convention is to number them . this is the first column , so that 's group one , second column , third group , fourth , fifth , sixth ,... | now something interesting happens as you go to the d block . we studied this when we looked at electron configurations , but if you look at the electron configuration for say scandium right over here , the electron , let me do it in magenta , the electron configuration for scandium , so scandium , scandium 's electron ... | is there a video to precede this that describes how electron configurations are found , and why they 're found that way ? |
- let 's talk a little bit about groups of the periodic table . now , a very simple way to think about groups is that they just are the columns of the periodic table , and the standard convention is to number them . this is the first column , so that 's group one , second column , third group , fourth , fifth , sixth ,... | then we start filling the d block . these are the d block elements here . you have to remember , the d block you backfill . | at 6.07 , why do we back fill the d block elements ? |
- let 's talk a little bit about groups of the periodic table . now , a very simple way to think about groups is that they just are the columns of the periodic table , and the standard convention is to number them . this is the first column , so that 's group one , second column , third group , fourth , fifth , sixth ,... | if we go with group one , group one ... and hydrogen is a little bit of a strange character because hydrogen is n't trying to get to eight valence electrons . hydrogen in that first shell just wants to get to two valence electrons like helium has . hydrogen is kind of ... | how can an element like lithium get a full outer shell ( 8 electrons ) if it only has 3 electrons in the first place ? |
- let 's talk a little bit about groups of the periodic table . now , a very simple way to think about groups is that they just are the columns of the periodic table , and the standard convention is to number them . this is the first column , so that 's group one , second column , third group , fourth , fifth , sixth ,... | - let 's talk a little bit about groups of the periodic table . now , a very simple way to think about groups is that they just are the columns of the periodic table , and the standard convention is to number them . | why is `` cn '' ( 112 ) showed differently than it 's neighbors ? |
- let 's talk a little bit about groups of the periodic table . now , a very simple way to think about groups is that they just are the columns of the periodic table , and the standard convention is to number them . this is the first column , so that 's group one , second column , third group , fourth , fifth , sixth ,... | let 's just think a little about some of the groups that you will hear about and why they react in very similar ways . if we go with group one , group one ... and hydrogen is a little bit of a strange character because hydrogen is n't trying to get to eight valence electrons . hydrogen in that first shell just wants to... | why hydrogen is placed in group 1 ? |
- let 's talk a little bit about groups of the periodic table . now , a very simple way to think about groups is that they just are the columns of the periodic table , and the standard convention is to number them . this is the first column , so that 's group one , second column , third group , fourth , fifth , sixth ,... | - let 's talk a little bit about groups of the periodic table . now , a very simple way to think about groups is that they just are the columns of the periodic table , and the standard convention is to number them . | what do the light gray elements mean in the above periodic table ? |
- let 's talk a little bit about groups of the periodic table . now , a very simple way to think about groups is that they just are the columns of the periodic table , and the standard convention is to number them . this is the first column , so that 's group one , second column , third group , fourth , fifth , sixth ,... | it has one electron in its outermost shell . what about sodium ? well , sodium is going to have the same electron configuration as neon . | is sodium ( na ) a typical element ? |
- let 's talk a little bit about groups of the periodic table . now , a very simple way to think about groups is that they just are the columns of the periodic table , and the standard convention is to number them . this is the first column , so that 's group one , second column , third group , fourth , fifth , sixth ,... | well , to think about that you just have to think about their electron configurations . for example , the electron configuration for lithium is going to be the same as the electron configuration of helium , of helium . then you 're going to go to your second shell , 2s1 . | why does the electronic configuration of iron have 3d6 at the end and not 4d6 ? |
- let 's talk a little bit about groups of the periodic table . now , a very simple way to think about groups is that they just are the columns of the periodic table , and the standard convention is to number them . this is the first column , so that 's group one , second column , third group , fourth , fifth , sixth ,... | they all have the very similar property of not being reactive . why do n't they react ? because they have eight valence electrons . | is n or p smallest ionization energy ? |
- let 's talk a little bit about groups of the periodic table . now , a very simple way to think about groups is that they just are the columns of the periodic table , and the standard convention is to number them . this is the first column , so that 's group one , second column , third group , fourth , fifth , sixth ,... | in fact , they especially love to react with the alkali metals over here . then finally you get to kind of your atomic nirvana in the noble gases here . the noble gases , that 's the other name for the group , 18 elements , noble gases . they all have the very similar property of not being reactive . | so , how the noble gases are in the nature ? |
- let 's talk a little bit about groups of the periodic table . now , a very simple way to think about groups is that they just are the columns of the periodic table , and the standard convention is to number them . this is the first column , so that 's group one , second column , third group , fourth , fifth , sixth ,... | these right over here are the alkali . alkali metals . now why do all of these have very similar reactions ? | can we use `` base '' and `` alkali '' interchangeably when we refer to alkali earth metals ? |
- let 's talk a little bit about groups of the periodic table . now , a very simple way to think about groups is that they just are the columns of the periodic table , and the standard convention is to number them . this is the first column , so that 's group one , second column , third group , fourth , fifth , sixth ,... | now , a very simple way to think about groups is that they just are the columns of the periodic table , and the standard convention is to number them . this is the first column , so that 's group one , second column , third group , fourth , fifth , sixth , seventh , eighth , group nine , group 10 , 11 , 12 , 13 , 14 15... | what is the valency of 18 group ? |
- let 's talk a little bit about groups of the periodic table . now , a very simple way to think about groups is that they just are the columns of the periodic table , and the standard convention is to number them . this is the first column , so that 's group one , second column , third group , fourth , fifth , sixth ,... | if we move one over to the right this group two right over here , these are called the alkaline earth metals . alkaline , alkaline earth metals . once again , they have very similar ... | so is beryllium an alkaline earth metal ( since oxides and hydroxides of beryllium are not found in the earths crust ) ? |
- let 's talk a little bit about groups of the periodic table . now , a very simple way to think about groups is that they just are the columns of the periodic table , and the standard convention is to number them . this is the first column , so that 's group one , second column , third group , fourth , fifth , sixth ,... | there , once again , are exceptions in these transition metals right here that for the most part are going in backfilling that d block . once you 've kind of backfilled those d blocks then you come over here and you start filling the p block . for example , if you look at the electron configuration for , let 's say car... | what are the d blocks and f blocks ? |
- let 's talk a little bit about groups of the periodic table . now , a very simple way to think about groups is that they just are the columns of the periodic table , and the standard convention is to number them . this is the first column , so that 's group one , second column , third group , fourth , fifth , sixth ,... | these right over here are the alkali . alkali metals . now why do all of these have very similar reactions ? | why do the halogens want to react only to alkali metals so badly ? |
- let 's talk a little bit about groups of the periodic table . now , a very simple way to think about groups is that they just are the columns of the periodic table , and the standard convention is to number them . this is the first column , so that 's group one , second column , third group , fourth , fifth , sixth ,... | now something interesting happens as you go to the d block . we studied this when we looked at electron configurations , but if you look at the electron configuration for say scandium right over here , the electron , let me do it in magenta , the electron configuration for scandium , so scandium , scandium 's electron ... | things seem to get vague for me after . for example ; what does he mean by `` backfilling '' so all the transition metals in period 4 electron configuration will be `` backfilled '' by argon ? |
- let 's talk a little bit about groups of the periodic table . now , a very simple way to think about groups is that they just are the columns of the periodic table , and the standard convention is to number them . this is the first column , so that 's group one , second column , third group , fourth , fifth , sixth ,... | you go to this yellow group right over here . these are the halogens . there 's special name for them . | can anyone exactly explain , why halogens are called so ? |
- let 's talk a little bit about groups of the periodic table . now , a very simple way to think about groups is that they just are the columns of the periodic table , and the standard convention is to number them . this is the first column , so that 's group one , second column , third group , fourth , fifth , sixth ,... | well , to think about that you just have to think about their electron configurations . for example , the electron configuration for lithium is going to be the same as the electron configuration of helium , of helium . then you 're going to go to your second shell , 2s1 . | why are the compounds of lithium and beryllium not ionic ? |
- let 's talk a little bit about groups of the periodic table . now , a very simple way to think about groups is that they just are the columns of the periodic table , and the standard convention is to number them . this is the first column , so that 's group one , second column , third group , fourth , fifth , sixth ,... | well , in its second shell , its outermost shell , it has two plus two . it has four valence electrons . that 's going to be true for the things in this group . | what does 'valence electrons ' mean ? |
- let 's talk a little bit about groups of the periodic table . now , a very simple way to think about groups is that they just are the columns of the periodic table , and the standard convention is to number them . this is the first column , so that 's group one , second column , third group , fourth , fifth , sixth ,... | it does n't share as much in common with everything else in group one as you might expect for , say , all of the things in group two . group one , if you put hydrogen aside , these are referred to as the alkali metals . and hydrogen is not considered an alkali metal . | what does the s that you put after the element symbol stand for ? |
- let 's talk a little bit about groups of the periodic table . now , a very simple way to think about groups is that they just are the columns of the periodic table , and the standard convention is to number them . this is the first column , so that 's group one , second column , third group , fourth , fifth , sixth ,... | that 's because the elements in a column , or the elements in a group tend to have the same number of electrons in their outermost shell . they tend to have the same number of valence electrons . and valence electrons are electrons in the outermost shell they tend to coincide , although there 's a slightly different va... | so 's ' is the number of shells but what is the 'd ' and also how it the number to power of the 's ' and the 'd ' determined ? |
- let 's talk a little bit about groups of the periodic table . now , a very simple way to think about groups is that they just are the columns of the periodic table , and the standard convention is to number them . this is the first column , so that 's group one , second column , third group , fourth , fifth , sixth ,... | - let 's talk a little bit about groups of the periodic table . now , a very simple way to think about groups is that they just are the columns of the periodic table , and the standard convention is to number them . | what does the color of the periodic table represents ? |
- let 's talk a little bit about groups of the periodic table . now , a very simple way to think about groups is that they just are the columns of the periodic table , and the standard convention is to number them . this is the first column , so that 's group one , second column , third group , fourth , fifth , sixth ,... | because they have eight valence electrons . they have filled their outermost shell . they do n't find the need . | sal says that 4s2 is the outermost shell , but why ? |
- let 's talk a little bit about groups of the periodic table . now , a very simple way to think about groups is that they just are the columns of the periodic table , and the standard convention is to number them . this is the first column , so that 's group one , second column , third group , fourth , fifth , sixth ,... | these right over here are the alkali . alkali metals . now why do all of these have very similar reactions ? | are there any alkali metals that bond covalently ? |
- let 's talk a little bit about groups of the periodic table . now , a very simple way to think about groups is that they just are the columns of the periodic table , and the standard convention is to number them . this is the first column , so that 's group one , second column , third group , fourth , fifth , sixth ,... | these right over here are the alkali . alkali metals . now why do all of these have very similar reactions ? | do alkali metals for example lithium ... ..can it accept 8 electrons in its second shell as part of the octet rule ? |
- let 's talk a little bit about groups of the periodic table . now , a very simple way to think about groups is that they just are the columns of the periodic table , and the standard convention is to number them . this is the first column , so that 's group one , second column , third group , fourth , fifth , sixth ,... | let me emphasize that . we 're backfilling the d block . but these , their outermost electrons are in ... | when and why does backfilling occur ? |
- let 's talk a little bit about groups of the periodic table . now , a very simple way to think about groups is that they just are the columns of the periodic table , and the standard convention is to number them . this is the first column , so that 's group one , second column , third group , fourth , fifth , sixth ,... | these right over here are the alkali . alkali metals . now why do all of these have very similar reactions ? | if hydrogen is n't part of the alkali metals , then exactly in what group is it in ? |
- let 's talk a little bit about groups of the periodic table . now , a very simple way to think about groups is that they just are the columns of the periodic table , and the standard convention is to number them . this is the first column , so that 's group one , second column , third group , fourth , fifth , sixth ,... | - let 's talk a little bit about groups of the periodic table . now , a very simple way to think about groups is that they just are the columns of the periodic table , and the standard convention is to number them . this is the first column , so that 's group one , second column , third group , fourth , fifth , sixth ,... | pm , how do you label the groups using roman numerals from i-vii and group 0 ( zero ) without standard letters like a , b beside them ? |
- let 's talk a little bit about groups of the periodic table . now , a very simple way to think about groups is that they just are the columns of the periodic table , and the standard convention is to number them . this is the first column , so that 's group one , second column , third group , fourth , fifth , sixth ,... | then finally you get to kind of your atomic nirvana in the noble gases here . the noble gases , that 's the other name for the group , 18 elements , noble gases . they all have the very similar property of not being reactive . | also am i understanding correctly that all the other elements besides the noble gases react because they like to fill their quota of valence electrons ? |
- let 's talk a little bit about groups of the periodic table . now , a very simple way to think about groups is that they just are the columns of the periodic table , and the standard convention is to number them . this is the first column , so that 's group one , second column , third group , fourth , fifth , sixth ,... | - let 's talk a little bit about groups of the periodic table . now , a very simple way to think about groups is that they just are the columns of the periodic table , and the standard convention is to number them . | why are n't the elements at the bottom of the periodic table numbered ? |
- let 's talk a little bit about groups of the periodic table . now , a very simple way to think about groups is that they just are the columns of the periodic table , and the standard convention is to number them . this is the first column , so that 's group one , second column , third group , fourth , fifth , sixth ,... | also for them , not as quite as reactive as the alkaline metals . let me write this out , alkaline earth metals . but for them it 's easier to lose two electrons than to try to gain six to get to eight . | why did sal write sc : [ ar ] 4s^2 3d^1.and not sc : [ ar ] s^3 directly ? |
- let 's talk a little bit about groups of the periodic table . now , a very simple way to think about groups is that they just are the columns of the periodic table , and the standard convention is to number them . this is the first column , so that 's group one , second column , third group , fourth , fifth , sixth ,... | now something interesting happens as you go to the d block . we studied this when we looked at electron configurations , but if you look at the electron configuration for say scandium right over here , the electron , let me do it in magenta , the electron configuration for scandium , so scandium , scandium 's electron ... | why do you have to have a base element for the electron configurations ? |
- let 's talk a little bit about groups of the periodic table . now , a very simple way to think about groups is that they just are the columns of the periodic table , and the standard convention is to number them . this is the first column , so that 's group one , second column , third group , fourth , fifth , sixth ,... | it does n't share as much in common with everything else in group one as you might expect for , say , all of the things in group two . group one , if you put hydrogen aside , these are referred to as the alkali metals . and hydrogen is not considered an alkali metal . | why cant you just put what the element is ? |
- let 's talk a little bit about groups of the periodic table . now , a very simple way to think about groups is that they just are the columns of the periodic table , and the standard convention is to number them . this is the first column , so that 's group one , second column , third group , fourth , fifth , sixth ,... | now , a very simple way to think about groups is that they just are the columns of the periodic table , and the standard convention is to number them . this is the first column , so that 's group one , second column , third group , fourth , fifth , sixth , seventh , eighth , group nine , group 10 , 11 , 12 , 13 , 14 15... | though they belong to the same group why is the oxidation state different ? |
- let 's talk a little bit about groups of the periodic table . now , a very simple way to think about groups is that they just are the columns of the periodic table , and the standard convention is to number them . this is the first column , so that 's group one , second column , third group , fourth , fifth , sixth ,... | well , in its second shell , its outermost shell , it has two plus two . it has four valence electrons . that 's going to be true for the things in this group . | i know platinum is the only element which has 9 electrons in d subshell.why is so ? |
- let 's talk a little bit about groups of the periodic table . now , a very simple way to think about groups is that they just are the columns of the periodic table , and the standard convention is to number them . this is the first column , so that 's group one , second column , third group , fourth , fifth , sixth ,... | group one , if you put hydrogen aside , these are referred to as the alkali metals . and hydrogen is not considered an alkali metal . these right over here are the alkali . | is fr is also included in the category of alkali metal { as fr is a radioactive element } ? |
- let 's talk a little bit about groups of the periodic table . now , a very simple way to think about groups is that they just are the columns of the periodic table , and the standard convention is to number them . this is the first column , so that 's group one , second column , third group , fourth , fifth , sixth ,... | now , a very simple way to think about groups is that they just are the columns of the periodic table , and the standard convention is to number them . this is the first column , so that 's group one , second column , third group , fourth , fifth , sixth , seventh , eighth , group nine , group 10 , 11 , 12 , 13 , 14 15... | what r the acids in group 17 called , oxyacids or hydracids ? |
- let 's talk a little bit about groups of the periodic table . now , a very simple way to think about groups is that they just are the columns of the periodic table , and the standard convention is to number them . this is the first column , so that 's group one , second column , third group , fourth , fifth , sixth ,... | then we start filling the d block . these are the d block elements here . you have to remember , the d block you backfill . | what is the process for finding oxidation numbers for elements ? |
- let 's talk a little bit about groups of the periodic table . now , a very simple way to think about groups is that they just are the columns of the periodic table , and the standard convention is to number them . this is the first column , so that 's group one , second column , third group , fourth , fifth , sixth ,... | - let 's talk a little bit about groups of the periodic table . now , a very simple way to think about groups is that they just are the columns of the periodic table , and the standard convention is to number them . | how are groups shown on the periodic table because i did n't quite understand ? |
- let 's talk a little bit about groups of the periodic table . now , a very simple way to think about groups is that they just are the columns of the periodic table , and the standard convention is to number them . this is the first column , so that 's group one , second column , third group , fourth , fifth , sixth ,... | if we go with group one , group one ... and hydrogen is a little bit of a strange character because hydrogen is n't trying to get to eight valence electrons . hydrogen in that first shell just wants to get to two valence electrons like helium has . hydrogen is kind of ... | to me it looks like there is at least 10 electrons in the 3d orbital plus another 2 from 3s and 6 from 3p , so 18 in the 3rd orbital ? |
- let 's talk a little bit about groups of the periodic table . now , a very simple way to think about groups is that they just are the columns of the periodic table , and the standard convention is to number them . this is the first column , so that 's group one , second column , third group , fourth , fifth , sixth ,... | let 's keep looking at the other groups . if we move one over to the right this group two right over here , these are called the alkaline earth metals . alkaline , alkaline earth metals . | why the electronic confugration from right to left ? |
- let 's talk a little bit about groups of the periodic table . now , a very simple way to think about groups is that they just are the columns of the periodic table , and the standard convention is to number them . this is the first column , so that 's group one , second column , third group , fourth , fifth , sixth ,... | these right over here are the alkali . alkali metals . now why do all of these have very similar reactions ? | how are the alkali metals and the alkali earth metals different ? |
- let 's talk a little bit about groups of the periodic table . now , a very simple way to think about groups is that they just are the columns of the periodic table , and the standard convention is to number them . this is the first column , so that 's group one , second column , third group , fourth , fifth , sixth ,... | group one , if you put hydrogen aside , these are referred to as the alkali metals . and hydrogen is not considered an alkali metal . these right over here are the alkali . | is this why in science-fiction silicon is considered to be a great substitute for carbon ? |
- let 's talk a little bit about groups of the periodic table . now , a very simple way to think about groups is that they just are the columns of the periodic table , and the standard convention is to number them . this is the first column , so that 's group one , second column , third group , fourth , fifth , sixth ,... | well , in its second shell , its outermost shell , it has two plus two . it has four valence electrons . that 's going to be true for the things in this group . | sc would have 2 , not 3 valence electrons ? |
- let 's talk a little bit about groups of the periodic table . now , a very simple way to think about groups is that they just are the columns of the periodic table , and the standard convention is to number them . this is the first column , so that 's group one , second column , third group , fourth , fifth , sixth ,... | - let 's talk a little bit about groups of the periodic table . now , a very simple way to think about groups is that they just are the columns of the periodic table , and the standard convention is to number them . | does the periodic table only have metal elements shown ? |
- let 's talk a little bit about groups of the periodic table . now , a very simple way to think about groups is that they just are the columns of the periodic table , and the standard convention is to number them . this is the first column , so that 's group one , second column , third group , fourth , fifth , sixth ,... | then you 're going to go to your second shell , 2s1 . it has one valence electron . it has one electron in its outermost shell . | 5 what is a valence electron ? |
- let 's talk a little bit about groups of the periodic table . now , a very simple way to think about groups is that they just are the columns of the periodic table , and the standard convention is to number them . this is the first column , so that 's group one , second column , third group , fourth , fifth , sixth ,... | there 's actually a lot of interesting exceptions that happen in the transition metals in the d block . but we 're not gon na go into those details . let 's just think a little about some of the groups that you will hear about and why they react in very similar ways . | because it can take an e- too as a cl atom does and give an e- as an na atom too ... then , is there any element that is exceptional too like h ? |
- let 's talk a little bit about groups of the periodic table . now , a very simple way to think about groups is that they just are the columns of the periodic table , and the standard convention is to number them . this is the first column , so that 's group one , second column , third group , fourth , fifth , sixth ,... | - let 's talk a little bit about groups of the periodic table . now , a very simple way to think about groups is that they just are the columns of the periodic table , and the standard convention is to number them . | what is the trend of reactivity in the periodic table ? |
- let 's talk a little bit about groups of the periodic table . now , a very simple way to think about groups is that they just are the columns of the periodic table , and the standard convention is to number them . this is the first column , so that 's group one , second column , third group , fourth , fifth , sixth ,... | now something interesting happens as you go to the d block . we studied this when we looked at electron configurations , but if you look at the electron configuration for say scandium right over here , the electron , let me do it in magenta , the electron configuration for scandium , so scandium , scandium 's electron ... | how do na and ne have the same electron configuration ? |
- let 's talk a little bit about groups of the periodic table . now , a very simple way to think about groups is that they just are the columns of the periodic table , and the standard convention is to number them . this is the first column , so that 's group one , second column , third group , fourth , fifth , sixth ,... | now something interesting happens as you go to the d block . we studied this when we looked at electron configurations , but if you look at the electron configuration for say scandium right over here , the electron , let me do it in magenta , the electron configuration for scandium , so scandium , scandium 's electron ... | what is the electron configuration for ga then ? |
- let 's talk a little bit about groups of the periodic table . now , a very simple way to think about groups is that they just are the columns of the periodic table , and the standard convention is to number them . this is the first column , so that 's group one , second column , third group , fourth , fifth , sixth ,... | these right over here are the alkali . alkali metals . now why do all of these have very similar reactions ? | 0 , what 's the difference between alkali metals and alkali earth metals ? |
- let 's talk a little bit about groups of the periodic table . now , a very simple way to think about groups is that they just are the columns of the periodic table , and the standard convention is to number them . this is the first column , so that 's group one , second column , third group , fourth , fifth , sixth ,... | these right over here are the alkali . alkali metals . now why do all of these have very similar reactions ? | at about you talk about the f-block elements , i would like to know if there is a name to specify those particular elements such as there is for alkali metals or alkaline-earth metals ? |
- let 's talk a little bit about groups of the periodic table . now , a very simple way to think about groups is that they just are the columns of the periodic table , and the standard convention is to number them . this is the first column , so that 's group one , second column , third group , fourth , fifth , sixth ,... | because they have eight valence electrons . they have filled their outermost shell . they do n't find the need . | how is 3s orbital filled after the 4s orbital ? |
- let 's talk a little bit about groups of the periodic table . now , a very simple way to think about groups is that they just are the columns of the periodic table , and the standard convention is to number them . this is the first column , so that 's group one , second column , third group , fourth , fifth , sixth ,... | they do n't find the need . they 're noble . they 're kind of above the fray . | argon is a noble element but why scandium is having same properties with it ? |
- let 's talk a little bit about groups of the periodic table . now , a very simple way to think about groups is that they just are the columns of the periodic table , and the standard convention is to number them . this is the first column , so that 's group one , second column , third group , fourth , fifth , sixth ,... | these right over here are the alkali . alkali metals . now why do all of these have very similar reactions ? | not a concept misunderstanding , just wondering about the answer to this question which is more reactive : alkali metals ( group 1 ) or halogens ( group 17 ) ? |
- let 's talk a little bit about groups of the periodic table . now , a very simple way to think about groups is that they just are the columns of the periodic table , and the standard convention is to number them . this is the first column , so that 's group one , second column , third group , fourth , fifth , sixth ,... | let me emphasize that . we 're backfilling the d block . but these , their outermost electrons are in ... | what does `` backfilling '' the d block mean ? |
- let 's talk a little bit about groups of the periodic table . now , a very simple way to think about groups is that they just are the columns of the periodic table , and the standard convention is to number them . this is the first column , so that 's group one , second column , third group , fourth , fifth , sixth ,... | once again , it has one valence electron , one electron in its outermost shell . all of these elements in orange right over here , they have one valence electron and they 're trying to get to the octet rule , this kind of stable nirvana for atoms . you could imagine is that they 're very reactive and when they react th... | what is hund 's rule ? |
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