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The atomic orbitals of the nitrogen atoms overlap to produce the molecular orbitals of nitrogen molecule N2.
The new molecular orbitals are created as follows:
- A bonding σ1s and an antibonding σ*1 s MO are formed by the 1s orbitals.
- A bonding σ2s and an antibonding σ*2 s MO are formed by the 2s orbitals.
- A bonding σ2pz and an antibonding σ*2pz MO are formed by the 2p orbitals directed along the internuclear axis.
- Each atom’s 2px and 2py orbitals combine to create bonding π2px and π2py bonding MOs, as well as antibonding π*2px and π*2py bonding MO.
Hence, the resulting electron configuration of a nitrogen molecule is (σ1s)²(σ*1s)²(σ2s)²(σ*2s)²(π2px)²(π2py)²(σ2pz)2
