Theory of the Dielectric Constant of a Nonpolar Fluid

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Abstract
Taking the dipole interactions of molecules into consideration, a statistical theory of the dielectric constant of a nonpolar fluid is presented. It is assumed that the molecules have a constant polarizability and no higher‐order multipole moments. The deviation of the Clausius—Mossotti formula from experiments is expressed in a density series. It is found that coefficient B in the generalized Clausius—Mossotti Eq. (5.1) has a relation to coefficient A. B is determined explicitly as a function of temperature for isotropic spherical molecules with hard‐sphere potentials, square‐well potentials, and Lennard‐Jones potentials. The results are compared with the data of Johnston, Oudemans, and Cole on inert gases.