Question

why are aryl halides less reactive towards nucleophilic substitution reactions than alkyl halides?

Answer 1

hey buddy !! here's your answer...

Aryl halides are relatively unreactive towards nucleophilic substitution reactions as compared to alkyl halides.

This lack of reactivity is due to several factors.

➡️Steric hindrance caused by the benzene ring of the aryl halide prevents SN2 reactions.

➡️ Moreover, phenyl cations are unstable, thus making SN1 reactions impossible.

hope it helps !! ❤️✌️

Answer 2

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ANSWER :

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Aryl halides are less reactive towards nucleophilic substitution reaction as compared to alkyl halides due to resonance stabilization.

Due to resonance, C−Cl bond acquires partial double bond character and becomes shorter and stronger and cannot be easily replaced by nucleophiles. 

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