Organic Compounds Containing Halogens Question 85

Question: Chlorobenzene is

Options:

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

Show Answer

Answer:

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_2H_5-Cl}}>\underset{\text{less reactive}}{\mathop{C_6H_5-CH_2-Cl}} $