00:02
In this problem, we have to discuss various properties of the compound arsenic trichloride.
00:10
So in first part, we have to draw loose dot structure for this compound.
00:17
As from the periodic table, we can observe that arsenic is a 15th group element.
00:25
So arsenic is a 15th group element and for 15th group elements, number of electrons in outer cell is 3 therefore there is 3 unpaired electron in p orbital and 2 electrons are in s orbital so this is s orbital and this is p orbital so there are total 5 electrons are present in outer cell now if we want to draw louisdoll structure we have to consider the number of electrons in chlorine atoms also.
01:18
So chlorine atom is a 17th group element and for chlorine atoms its outer cell s orbitals are completely filled and in p orbitals five electrons are present.
01:39
So first three electrons and then pairing will restarts.
01:45
So there are total 5 electrons in p orbital and 2 electrons in 7 and 2 electrons in s orbital.
01:52
So total 7 electrons are present in outer cell and 5 electron in case of arsenic atom.
02:02
So here the central atom is arsenic.
02:05
So first we will write here arsenic and there are 3 chlorine atoms.
02:11
So we will write chlorine atoms.
02:15
And now we will draw its electrons so chlorine has total seven electrons so these are six and one seven electron for this chlorine also seven electrons so six and seven here two four six and seven so we have drawn the number of electrons for chlorine atoms.
02:47
Now we have to draw electron for arsenic atom.
02:50
So let me use different color.
02:54
So it will be easier to understand.
02:56
So this is first arsenic electron.
02:59
It will pair with one chlorine of what one chlorine electron and this is second arsenic at electron.
03:07
This is third arsenic electron.
03:09
So three electrons of arsenic will pair with chlorine and now as there are total five electrons so two electrons will left as loan pair so this will be the structure lewis dot structure for arsenic trichloride now coming to the second part of the problem we have to draw structural formula so structural formula for arsenic trichloride will be first of all we will draw center atom so here this is arsenic atom and there will be three bonds for chlorine atoms and let me use some different color for to show the bonds so these three bonds will be with chlorine atom and now here is first chlorine atom here is second chlorine atom and here is third chlorine atom and there is one lone pair and lone pair will be present on the third side.
04:58
So this is arsenic atom.
05:01
This was chlorine atom.
05:03
This was chlorine atom and this was chlorine atom...