How Many Resonance Structures Does N3 Have?

The azide ion (N₃^–) has 3 resonance structures. These structures are possible due to the delocalization of electrons across the three nitrogen atoms. Here is a brief explanation:

• Resonance Structure 1: The central nitrogen atom forms a double bond with one of the terminal nitrogen atoms and a single bond with the other terminal nitrogen atom. The negative charge is on the terminal nitrogen atom with the single bond.
• Resonance Structure 2: The central nitrogen atom forms a double bond with the other terminal nitrogen atom and a single bond with the first terminal nitrogen atom. The negative charge is now on the other terminal nitrogen atom with the single bond.
• Resonance Structure 3: The central nitrogen atom forms single bonds with both terminal nitrogen atoms, and the negative charge is on the central nitrogen atom.

These resonance structures help to stabilize the azide ion by distributing the negative charge across the molecule.