Lanthanoids ground state electronic configurations

In the lanthanoides and actinoides, the competition between the outer d and inner / electrons determines the ground-state electron configuration as well as the chemistry of these elements. Here at the beginning of the superactinides, not merely two but four electron shells, namely the 8 1/2, and 5g7/2, are... 

The valence shell of a lanthanoid element contains 4/ orbitals and that of an actinoid, 5/ atomic orbitals. The ground state electronic configurations of the /-block elements are listed in Table 25.1. A 4/ atomic orbital has no radial node, whereas a 5/ atomic orbital has one radial node (see Section 1.6). A crucial difference between the 4/ and 5/ orbitals is the fact that the 4/ atomic orbitals are... 

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