Which of the following alkyl halides will undergo `S_(N)1` reaction most redily ?

Options

A. `(CH_(3))_(2)C-F`
B. `(CH_(3))_(3)C-Cl`
C. `(CH_(3))_(3)C-Br`
D. `(CH_(3))_(3)C-I`

Answer

D

Explanation

`(CH_(3))_(3)C-I` undergo `S_(N)^(1)` reaction most readily as C—I bond is weakest, I due to the large difference in the size of carbon I m and iodine.