Atomic Dimensions from the Coefficients of Compressibility and Thermal Expansion

摘要

Starting from the equation of statepmdash;K(Vmdash;V0)/V0=RT/Vmdash;V0, the relation agr;a/bgr; =R/(Vmdash;V0) is derived, whereV0is identified with the actual volume occupied by one mole of atoms or molecules. Values of the radii of atoms for different elements are calculated from this relation and compared to the values obtained from crystal analysis. Possibility of using the relation agr;a/bgr; =R/(Vmdash;V0) to estimate molecular dimensions in the liquid state is also referred to.