00:01
In this problem, we're looking for another resident structure for the thioformate ion.
00:07
So we have h, c, s, and o, and each is attached to our carbon.
00:19
So things to keep in mind, carbon likes four bonds.
00:25
And here, our hydrogen can only have one bond.
00:31
So if we're going to have a second bond, it's going to need to either be carbon to oxygen or carbon of sulfur.
00:37
And we don't want two double bonds because then we'd have five bonds to carbon, which would put our negative charge on carbon.
00:46
So the problem here is that for the best resonance structure, we want this negative charge on one of the most ultra -negative atoms.
00:59
So that can be oxygen or sulfur, but we really don't want it on carbon...