Skip to content
dronacharya.ai
← JEE Advanced 2015 · Paper 1
ChemistryInteger+4Question 22 of 60

JEE Advanced 2015 · Paper 1, Chemistry question 22

The number of resonance structures for N is

2-Naphthol treated with NaOH gives N (the 2-naphthoxide ion).
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