What would you predict for the lengths of the bonds in NO 2 rm NO 2- relative to NO rm N- rm O single bonds?

In NO₂ (nitrogen dioxide), the bond lengths between nitrogen and oxygen are typically shorter than a single bond due to the presence of resonance structures that create partial double bond character. In NO₂⁻ (the nitrite ion), the additional electron contributes to resonance, which also leads to bond lengths that are shorter than a typical N−O single bond. Therefore, the bond lengths in NO₂ and NO₂⁻ are expected to be shorter than the N−O single bond, with NO₂ likely having slightly shorter bonds due to greater double bond character compared to NO₂⁻.