Which shows a changes in the type of hybridisation when :

Options

A. `NH_(3)` combines with `H^(+)`
B. `AlH_(3)` combines with `H^(-)`
C. in both cases
D. in none cases

Answer

B

Explanation

`NH_3` and `NH_4^+` are both `sp^3` -hybridised , `AlH_3` is `sp^2` and `AlH_4^(-)` is `sp^3` -hybridisesd.