The `ONO` bond angle is maximum in

Options

A. `NO_(3)^(-)`
B. `NO_(2)^(-)`
C. `NO_(2)`
D. `NO_(2)^(+)`

Answer

D

Explanation

The nitrate ion has three resonance structure,with the double bond on a different oxygen for each,In all resonance structure the nitrogen has three bonds,therefore,its hybridisation is`sP^(2)`.Each of the oxygen atoms also has`sP^(2)` hybridisaton,since the hybridisation is determined by the resonance stucture with the double bond,where the oxygen has a double bond and two lone pairs.The actual geometry of the polyatomic ion is trigonal planer with bond angles of `120^(@)` `NO_(2)^(-)` 18 electrons,ideal geometry trigonal planer,`sp^(2)`with bond angle of`116^(@)`
`NO_(2)`:17 electrons,ideal geometry trigonal planer,`sp^(2)` with bond angle of`134^(@)`
`NO_(2)^(+)`,16 electrons, ideal geometry linear,sp with bond angle of`180^(@)`