Question

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

• A. The formation of less stable carbene
• B. Resonance stabilisation
• C. Longer carbon halogen bond
• D. $s{p}^2$ -hybridised carbon bonded to halogen

Answer 1

Answer: (B), (D)

$s{p}^2$ -hybridised carbon bonded to halogen



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