Question

please answer it asap​

Answer 1

Answer:

Explanation:

the right you see is anulene 10

which is non planar molecule

and resonance will not through out

and in left it is planar molecule

and resonance occur through out

and they are equivalent resonating structures

so they bond order of 1.5

and  c and d have 1 and 2  respectively

d<a=b<c