valence-bond method

valence-bond method

[′vā·ləns ¦bänd ‚meth·əd]
(physical chemistry)
A method of calculating binding energies and other parameters of molecules by taking linear combinations of electronic wave functions, some of which represent covalent structures, others ionic structures; the coefficients in the linear combination are calculated by the variational method. Also known as valence-bond resonance method.