Bond Order in SHMO Theory Sab 0, One Orbital per Atom

CHARGE AND BOND ORDER IN SHMO THEORY (SAB = 0, ONE ORBITAL PER ATOM) 

It is of interest to enquire how the electrons are redistributed during an interaction and how a bond is affected. We use a simplified Mulliken population analysis [see Appendix A, equations (A.77)-(A.79)]. The simplification consists of dropping all terms involving the overlap of atomic orbitals and assuming that, in any given MO, there is only one atomic orbital on any given center). Thus, we may assume that the following relations hold  

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