Empirical Evaluation of Integrals. Applications

Examination of Equations 30-18 and 30-19 shows that for equivalent electrons F is equal to G (with the same index). We therefore have for the separations of the levels for np2 

The theory therefore indicates that, if the approximations which 

Slater gives the example of the configuration ls22s22p6 3s23p2 of silicon, for which the observed term values3 are 

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