Self-Consistent-Field Calculations for the Translawrencium Elements—Beginning of a 5g Transition Series

The preferred electronic configurations of the very heavy synthetic elements in the vicinity of atomic number 126 have been deduced through nonrelativistic self‐consistent Hartree calculations made for many configurations. The resulting wavefunctions were used to compute the total average Hartree–Fock energy of each configuration. The configuration ${\text{8s}}^2{\text{6f}}^1{\text{5g}}^{\nu }$ emerges as more stable than either ${\text{8s}}^2{\text{7d}}^1{\text{5g}}^{\nu }$ or ${\text{8s}}^2{\text{5g}}^{\text{ν+1}}$ . The principal chemical valences are 3+ and 2+; oxidation to 4+ would probably be difficult.