Deviations from constancy of the Clausius-Mossotti
function, C[subscript M], with changes in density and temperature are
considered on the basis of a one-dimensional oscillator
model of the atom in which the valence electrons are assumed
restricted by infinite potentials, but interact with all
others in the medium through dipolar forces.
The density-dependence of C[subscript M] is qualitatively in
agreement with experiment, but the temperature-dependence
is negligible as the excited states of an oscillator do not
represent those of real atoms. In addition, the model does
not permit the existence of the ionized state of the atom.
The analysis here suggest a more promising, threedimensional
model which admits of realistic atomic potentials,
dipolar interaction based on continuous dielectric surroundings
and repulsive potentials which ensure the existence of
delocalized electronic states with consequent screening of
the dipolar forces
