Which of the following spices is angular?

Options

A. `N_(2)O`
B. `NO_(2)`
C. `NO_(3)^(-)`
D. `NO^(+)`

Answer

2

Explanation

`NO_(2)` molecule is V-shaped with `O-N-O` bond angle `134^(@)` and `N-O` bond length `120 p m` which is intermediate between a single and a double bond.
Hence `NO_(2)`, is regarded as a resonance hybrid of the following two structures:

`NO_(2)` is linear, `NO_(3)^(-)` is trigonal planner and `NO^(+)` is linear.