Question

# Aryl halide is less reactive than alkyl halide towards nucleophilic substitution because:

A
of less stable carbonium ion
B
due to large CCl bond energy
C
of inductive effect
D
of resonance stabilization and sp2 hybridization of C attached to halide

Solution

## The correct option is D of resonance stabilization and $$s{p}^{2}$$ hybridization of $$C$$ attached to halideAryl halide is less reactive than alkyl halide towards nucleophilic substitution because of the resonance stabilization and $$sp^2$$ hybridization of $$C$$ attached to halide. Due to resonance, carbon-chlorine bond acquires partial double bond character, hence it becomes shorter and stronger, and thus, cannot be easily replaced by nucleophiles. This effect is further enhanced by the $$sp^2$$ nature of the $$C$$ atom to which chlorine is attached.Chemistry

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