# The correct order of increasing bond angles in the following triatomic species is :

$\begin {array} {1 1} (1)\;NO_2^+<NO_2^-<NO_2 & \quad (2)\;NO_2^-<NO_2^+<NO_2 \\ (3)\;NO_2^-<NO_2<NO_2^+ & \quad (4)\;NO_2^+NO_2<NO_2^- \end {array}$

Can you answer this question?