00:02
This question asks us to decide which of each pair is more stable.
00:07
So remember that for carbocad ions, benzylic is the most stable, and then allelic, and then tertiary, secondary, primary, methyl.
00:20
And for carbonyons, it is almost opposite of that.
00:25
So still these brethren and stable -ins -stableness ones are the best, the benzylic and allilic ones.
00:30
But then we go to methyl.
00:33
Tertiary secondary, or sorry, methyl primary secondary tertiary.
00:38
So this last part right here is the opposite.
00:42
So starting with letter a, we have carbonyons.
00:45
And so we have a secondary one on the left and a primary one on the right.
00:49
And so since these are carbon ions, primary will be more stable.
00:54
For part b, we have those same two positions, but now with carbocad ions.
00:58
And so for a carbocadion, the secondary is more stable than the primary.
01:03
Part c, we have carbon ions...