question_answer

Chlorobenzene is

A) Less reactive than benzyl chloride

B) More reactive than ethyl bromide

C) Nearly as reactive as methyl chloride

D) More reactive than isopropyl chloride

Correct Answer: A

Solution :

           Chlorobenzene is less reactive than benzyl chloride In chlorobenzene the lone pairs present on Cl atom get involved in resonance with \[\pi \]electrons of benzene due to which \[C-Cl\] bond acquires double bond character Hence, reactivity decreases.            \[\underset{\text{more reactive}}{\mathop{{{C}_{2}}{{H}_{5}}-Cl}}\,>\underset{\text{less reactive}}{\mathop{{{C}_{6}}{{H}_{5}}-C{{H}_{2}}-Cl}}\,\]