Amino group, `-NH_(2)` is ortho, para-directing group in case of aromatic electrophilic substitution but nitration of aniline produce a good amount of m-nitroaniline. This is because

Options

A. `-NH_(2)` gets converted into - `NH^(-)NO_(2)^(+)` which is m-directing
B. `NH_(2)` gets converted into `overset(+)(N)H_(3)` which is m-directing
C. `-NH_(2)` gets converted into `-NH^(+)SO_(4)^(-)` which is m-directing
D. ortho, para activity of `-NH_(2)` group is completely destroyed during nitration

Answer

B

Explanation

Protonation of `-NH_(2)` leads to the formation of `overset(+)(N)H_(3)` which is m-directing group.