Hello there,
I'm having trouble determining if I'm having too many or too few resonance structures.
I have some exercises from different sources and some of the solutions seem to lack resonance structures, or is it that I have skipped over a rule and didn't notice?
You can see examples in the images attached. In (1) is the 'official' solution, in (2) is the solution I came up with after working on another worksheet that had similar structures and more 'extensive' solutions, the turquoise marked structure is missing in the 'official' solution.
In (3) is a solution from another worksheet that was one of the 'guides' on how I used to solve similar resonance problems.
The second attachment is even more frustrating as the problem appears twice but has 'two' solutions.
Any help is appreciated:)