The number of resonance structures for N is
← JEE Advanced 2015 · Paper 1
ChemistryInteger+4Question 22 of 60
JEE Advanced 2015 · Paper 1, Chemistry question 22

Answer and worked solution
Official answer: 9
N. NaOH deprotonates 2-naphthol to 2-naphthoxide, N.
Resonance structures.
- Three structures keep the charge on oxygen, one for each Kekulé arrangement of the naphthalene rings.
- Six more form C=O and place the negative charge on ring carbons conjugated with it, in the same ring and, through the shared bond, in the other ring.
Answer: 9