Heitler-London covalence theory

Heitler-London covalence theory

[′hīt·lər ′lən·dən kō′vā·ləns ‚thē·ə·rē]
(physical chemistry)
A calculation of the binding energy and the distance between the atoms of a diatomic hydrogen molecule, which assumes that the two electrons are in atomic orbitals about each of the nuclei, and then combines these orbitals into a symmetric or antisymmetric function.