▎ 摘　　要

In the one-band model of strong coupling, the influence of substitutional impurity atoms on the energy spectrum and electrical conductance of graphene is studied. It is established that the ordering of substitutional impurity atoms on nodes of the crystal lattice causes the appearance of a gap in the energy spectrum of graphene with width eta vertical bar delta vertical bar centered at the point y delta, where eta is the parameter of ordering, (5 is the difference of the scattering potentials of impurity atoms and carbon atoms, and y is the impurity concentration. The maximum value of the parameter of ordering is eta(max) = 2y, y o at the ordering of graphene, i.e., the metal-dielectric transition arises. If the Fermi level is located outside the gap, then the electrical conductance increases with the parameter of order eta by the relation sigma(alpha alpha) similar to (y(2) - 1/4 eta(2)) . At the concentration y = 1/2, as the ordering of impurity atoms eta -> 1, the electrical conductance of graphene sigma(alpha alpha,) -> infinity, i.e., the transition of graphene in the state of ideal electrical conductance arises.