Abstract

The calculations of the 1-normalized Shannon entropy of Hartree-Fock electron density, S-eta, and Its variation with the number of electrons, [partial derivative S-eta/partial derivative N](Z), are reported for He-Xe atoms in the ground states. The N variation is shown as related to the Fukui function of the density functional theory and it becomes identically equal to zero if the electron density in N-electron system is described by the homogeneous electron gas.