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Bond Order from MO Theory Calculator

(bonding − antibonding) / 2 from MO electron counts.

Compute the molecular-orbital bond order from the number of electrons in bonding and antibonding orbitals: BO = (n_bonding − n_antibonding) / 2. Higher bond order means a stronger, shorter bond.

Dr. Helena Ortiz By Dr. Helena Ortiz
Published Last reviewed 1 min read

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How to use this calculator

  1. Fill in the inputs above using the units you already have.
  2. Values update automatically as you type — no submit button needed.
  3. Hover any result row for the underlying formula and intermediate values.

Formula

BO = (n_bonding − n_antibonding) / 2

In depth

Compute the molecular-orbital bond order from the number of electrons in bonding and antibonding orbitals: BO = (n_bonding − n_antibonding) / 2. Higher bond order means a stronger, shorter bond.