The ONO bond angle is maximum in

Options

A. `NO_3^(-)`
B. `NO_2^(-)`
C. `NO_2`
D. `NO_2^(+)`

Answer

D

Explanation

`NO_3^(-)` has `sp^2` hybridisation and three resonating structures.
Hence ONO bond angle = `120^@`
`NO_2^(+)` has sp hybridisation and N does not contain lone pair of electrons. Hence shape is linear `(underset(ddot)(ddotO)=overset(+)N=underset(ddot)(ddotO))` with bond angle = `180^@`
`NO_2` has one electron whereas `NO_2^(-)` has one lone pair of electrons. Hence in `NO_2^(-)` the repulsion on the bond pairs are more and angle is less.