Question

Why is the reason for the stability of aromatic diazonium salts?

(a) Dispersal of negative charge over the benzene ring

(b) Dispersal of positive charge over benzene ring

(c) Bond between diazonium group and anion

(d) High electronegativity of anion compared to the N atom

I have been asked this question in an internship interview.

This intriguing question originated from Preparation Method of Diazonium Salts topic in division Amines of Chemistry – Class 12

Answer 1

Correct option is (b) Dispersal of positive charge over benzene ring

The best I can explain: The stability of benzenediazonium salt is due to its resonance structures. In three of the resonance structures, the positive charge is dispersed over the benzene ring at ortho and para positions.