Conductivity of Metal Vapors at the Critical Point

The conductivity of metal vapors at the critical point and near it has been considered. The liquid-metal conductivity originates in this region. The thermodynamic parameters of the critical point, the density of conduction electrons, and the conductivities of various metal vapors have been calculated within the unified approach. It has been proposed to consider the conductivity at the critical point-critical conductivity-as the fourth critical parameter in addition to the density, temperature, and pressure.