Answer
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Work Step by Step
In the localized electron model, NO+ is described as having a single bond between nitrogen and oxygen, with nitrogen donating two electrons and oxygen accepting two electrons to form the σ bond. NO- has one σ bond and one π bond, where the oxygen donates two electrons to form the σ bond and the other two electrons form a π bond with the unpaired electron on nitrogen. NO has one unpaired electron, resulting in a radical species with one lone electron.
In the molecular orbital model, NO+ has a σ bonding MO, and NO- has one σ bonding MO and one π antibonding MO. NO has one unpaired electron in a π antibonding MO. The discrepancies between the models arise due to the delocalization and mixing of atomic orbitals in the molecular orbital model.
