In which of the following pairs of molecule/ions , the central atom has `sp^(2)` hybridization?

Options

A. `NO_(2)` and `NH_(3)`
B. `BF_(2)` and `NO_(2)^(-)`
C. `NH_(2)^(-)` and `H_(2)O`
D. `BF` and `NH_(3)`

Answer

b

Explanation

`BF_(3): sp^(2),NO_(2)^(-):sp^(2),NH_(3):sp^(3),NH_(2)^(-):sp^(3)H_(2)O:sp^(3)`