Question

Why is chlorobenzene less reactive?

Answer 1

Explanation:

Chlorobenzene is extremely less reactive towards a nucleophilic substitution reaction. ... This results in delocalization of the electrons of C- Cl bond and a partial double bond character develop in the bond, which makes it difficult for the nucleophile to cleave the C- Cl bond.

Answer 2

Explanation:

Chlorine is more electronegative than hydrogen. It draws electrons in the ring towards itself. So, it reduces the electron density of the aromatic ring of the ring. Hence, chlorobenzene is less reaction than benzene in electrophilic substitution reaction.