orbitals.

Localized molecular orbitals

The spherical 3D shape of s orbitals have no directionality in space and p_x, p_y, and p_z orbitals are all 90^o with respect to each other. Therefore, in order to obtain orbitals corresponding to chemical bonds to describe chemical reactions, Edmiston and Ruedenberg pioneered the development of localization procedures. For example, in CH₄, the four electrons from the 1s orbitals of the hydrogen atoms

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