Explores the dynamics of monatomic cubic crystal lattice under the influence of the interatomic forces with van der Vaal´s nature. The calculated dispersion curves, phonon spectra, the temperature dependence of the energy, heat capacity, mean square displacements for crystals with BCC and FCC lattices. Calculations emissivity of the surface layer of metals, as well as the temperature dependences of the energy, the heat capacity of the thermal motion of the centers of charge of the outer electron shells of the atoms of metals with BCC and FCC lattices.