With the assumptions that the radial dependence of the atomic orbitais (AO) is ignored and that the projection method is employed, a general procedure is presented for the discussion of hybridization and bond strength based on the maximum overlap method (MOM). The procedure was used for the non-equivalent hybrid atomic orbitais (HAO) in ML4 systems. The formulae of the bond strength according to Pauling are derived and the connection between the equivalent and non-equivalent hybrids is discussed. In combination with the results of previous work, it is shown that there is total coincidence betw...
