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. $sp^2$-hybridised carbon bonded to halogen

Answer 1

Answer: (D)

$sp^2$-hybridised carbon bonded to halogen

Answer 2

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