Question

Which of the following alkyl halides will undergo S_N1 reaction most readily?

Options

• (CH₃)₃C-F

• (CH₃)₃C-CI

• (CH₃)₃C-Br

• (CH₃)₃C-І

Answer 1

(CH₃)₃C-І

Explanation: 

All the given compounds are tertiary alkyl halides, but the C-I bond is the weakest bond due to the large difference in the size of carbon and iodine. So, (CH₃)₃C-I gives S_N1 reaction most readily.