NO2^- involves 2 bonds (one is N-O single bond, the other is N=O double bond) and holds a lone pair at N atom. according to VSEPR, NO2^- has a bent shape. Solution NO2^- involves 2 bonds (one is N-O single bond, the other is N=O double bond) and holds a lone pair at N atom. according to VSEPR, NO2^- has a bent shape..