Question

Among the following the most reactive alkyl halide towards SN2 reaction is

CH3CH21

(CH3)3C1

(CH3)2CHI

CH31​

Answer 1

Answer:

The SN² reaction reactivity is depends on the functional group which are attached to central carbon atom group.

 for  SN² reaction the more the bulky group less will be reactivity.

the general order of SN² reaction is 1° > 2°>3°

so,the most reactive alkyl halide is  

CH₃I

and the order is

CH₃I>CH₃CH₂I>(CH₃)₂CHI > (CH₃)CI₄