Abstract <p>An explanation of the dependence of the resistance of metals on the atomic number is proposed. Based on experimental data borrowed from the Encyclopedia of Physics, a table is given, in which the relationship between the resistance of various metals and their atomic number is clearly traced. With its help, an empirical illustration of this dependence is constructed, which has the form of a pronounced parabola. It is proved that such a dependence can be explained with the help of three main mechanisms of interaction of electrons, arranged in a hierarchical order in relaxation time: the electron–electron, electron–phonon (fluctuation), and electron–dipole interactions. A comparison of theoretical dependence and empirical dependence showed their quite satisfactory agreement.</p>