MOT bond order (Bond order = (bonding e⁻ − antibonding e⁻) / 2)

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Bond order = (bonding e⁻ − antibonding e⁻) / 2

What each symbol means

SymbolWhat it stands for
N_aElectrons in antibonding MOs
N_bElectrons in bonding MOs

When to use this

Homonuclear diatomics up to N₂; fill σ/π order per period.