00:01
To answer this question, it's best to draw the lewis structure for all of them.
00:07
Carbon disulfide.
00:09
Carbon has four valence electrons.
00:12
Sulfur has six.
00:13
There are two of them.
00:14
That's a total of 16 valence electrons.
00:18
If we put carbon in the middle and we bond the two sulfurs to the carbon, we would have used up two, plus two more.
00:28
So four.
00:30
We have 12 remaining, which gives us just enough to give three lone pairs to each sulfur.
00:37
But now copper does not have an octet.
00:40
So if we have sulfur share two of its lone pairs, we can get carbon an octet.
00:54
So it has an octet.
00:56
And so to do both sulfurs.
00:59
Next we have icl5.
01:05
Iodine has seven valence electrons.
01:07
Chlorine has seven.
01:09
There are five of them...