Evaluation of Interatomic Interactions from Relationships between Molar Volumes

Author： Shulyndin A.  

Publisher： MAIK Nauka/Interperiodica

ISSN： 0020-1685

Source： Inorganic Materials, Vol.41, Iss.6, 2005-06, pp. : 666-672

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Abstract

The interatomic interaction in elementary substances is assessed from changes in their molar volume and from their melting points. In periods 4–6 of the Periodic Table, the interaction increases with atomic weight in groups IA–VIII and decreases in the rest of the period. The outermost electron shell is shown to have a shielding effect. The formation of halides of different elements is accompanied by a change in the molar volume of the reactants, which is proportional to the enthalpy of formation of the compound.

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