Figure 11.

Electrical conductivities of Cs (open inverted triangles) and Rb (open squares) (Hensel & Edwards [35]), oxygen (solid triangles: Bastea et al. [38]), nitrogen (solid circles: Chau et al. [39]) and hydrogen (solid diamonds: Nellis et al. [40]) plotted versus the Mott parameter, $N^{1/3}{a}_H^{\ast }$, where $a_H^{\ast }$ is the effective Bohr radius of the atomic valence electron distribution and N is the number density of atoms (modified from [39]).