Arrange the following in the order of property indicated for each set:
`NO_(2), NO_(2)^(+), NO_(2)^(–)` (decreasing bond angle)

Explanation

`NO_(2)^(+)gt NO_(2)gt NO _(2)^(-)` . This is because ` NO_(2)^(+)` has no lone pair of elecrtons (i.e. has only bond pairs on two
Sides ) and hence it is linear . ` NO_(2)` has one unshared electon while ` NO_(2)^(-)` has one unshared electron pair .
There are greater on N-O bonds case of ` NO_(2)^(-)` than in case of ` NO_(2)`.