Question

Aryl halides are less reactive towards nucleophilic substitution
reaction as compared to alkyl halide due to

• A. the formation of less stable carbonium ion
• B. resonance stabilisation
• C. longer carbon halogen bond
• D. $s{p}^2$-hybridised carbon bonded to halogen

Answer 1

Answer: (B), (D)

Above resonance makes X- a poor leaving group. Also, the
carbon bearing X is $s{p}^2$- hybridised.