Question

The nucleophilic substitutions do not occur in haloarenes because ___________

(a) The carbon-halogen bond is much shorter

(b) The carbon-halogen bond is stronger compared to that in haloalkanes

(c) The lone pair of electrons on the halogen participates in delocalisation with the π-electrons of benzene ring

(d) All of the mentioned

I had been asked this question in an online interview.

My doubt is from Nucleophillic Substitution Reaction in division Reactivity of Molecules Reaction Mechanism of Engineering Chemistry I

Answer 1

Correct answer is (d) All of the mentioned

Easy explanation: The nucleophilic substitutions do not occur in haloarenes because the carbon-halogen bond is much shorter and stronger compared to that in haloalkanes and the lone pair of electrons on the halogen participates in delocalisation with the π-electrons of benzene ring.