The conjugate base of `NH_(2)^(-)` is

Options

A. `NH_(3)`
B. `NH^(2-)`
C. `NH_(4)^(+)`
D. `NH_(3)^(-)`

Answer

B

Explanation

`HA-H^(+) hArr A^(-)underset("Conjugate base")`
`NH_(2)^(-)-H^(+) hArr NH^(2-)underset("Conjugate base")`