Abstract
The form of the model potential of the valence electron suggested by Simons (1971) is used for the calculation of atomic dynamic characteristics given by second-order perturbation theory for the interaction of the atoms with an electromagnetic field. General formulae are derived and the results of numerical calculations in a wide frequency range for the dynamic polarizabilities of ground and excited state of alkali atoms and inert gases are presented. The efficiency of different calculation methods for various light frequencies and principal quantum numbers of the atomic levels is discussed.