On the basis of a previously suggested approach to the calculation of "indu
ctive" electronegativities of atoms and groups a simple method of theoretic
al estimation of in situ inductive electronegativities is elaborated. The m
ethod also allows the determination of inductive local and global chemical
hardness parameters on the basis of geometric characteristics of bonded ato
ms. This made it possible to provide a new "steric" interpretation for some
known chemical rules, such as the principle of maximum hardness. (C) 2000
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