The nitrite ion, ${NO}_{2}^{-}$ , may be represented by two major resonance forms. The lengths of the nitrogen-to-oxygen bonds in this ion are expected to be:

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the same as the length of nitrogen-to-oxygen triple bonds.

the same as the length of nitrogen-to-oxygen double bonds.

between the lengths of a nitrogen-to-oxygen single bond and a nitrogen-to-oxygen double bond.

between the lengths of a nitrogen-to-oxygen double bond and a nitrogen-to-oxygen triple bond.

answer is C.

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Detailed Solution

The ${NO}_{2}^{-}$ molecule has a 120 pm long bond. The nitrogen-to-oxygen bonds in this ion are predicted to have lengths that fall between that of a single nitrogen-to-oxygen bond and a double nitrogen-to-oxygen bond.

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