00:01
In this problem, we're told that each lewis structure is invalid, and we're asked to identify the error.
00:07
Our first structure is, which is co2, and this should have, c has 4 valence electrons, and o has 6 valence electrons, times 2 equals 12.
00:36
So i should have 16 valence electrons.
00:39
Here i have 2, 4, 6, 8, 10, 12, 14, 16, 18, 20.
00:45
This has 20 valence electrons.
00:49
So here we have the wrong electron total.
00:57
That's my answer for the first one.
01:04
My second is o, f.
01:20
And f has 7 times 2 equals 14 electrons.
01:25
Electrons and o has 6 times 1 so i should have 20 electrons.
01:33
2, 4, 6, 8, 10, 12, 14, 16, 18, 20.
01:37
So my electron total is correct.
01:41
Each fluorine has 2, 4, 6, 10 electrons.
01:48
So here i have an octet rule violation.
02:03
I'm going to go to this and here i've got wrong electron total and an octet rule violation...