Key points are not available for this paper at this time.
Tables have been constructed so that wave functions and energies, for any atomic state having 1s, 2s and 2p electrons, can be computed by variational means. Exchange terms are included, so that singlet and triplet states can be minimized separately. By using the tables a state can be calculated in a few hours. A few of the possible states have been worked out. The best parameters, the total energies and the term values are given for the states (1s^2) ^1S, (1s, 2s) ^1S, ^3S; (1, 2p) ^1P, ^3P; (1s^2, 2s) ^2S; (1s^2, 2p) ^2P; (1s^2, 2s^2) ^1S; (1s^2, 2s, 2p) ^1P, ^3P; (1s^2, 2p^2) ^1S, ^1D, ^3P; (1s^2, 2s^2, 2p) ^2P; (1s^2, 2s^2, 2p^6) ^1S; of the atoms He, Li, Be, B, C, N, O, F, Ne, Na and Mg. The intramultiplet separations have been computed, including the spin-spin interaction when necessary: the check with experiment being fairly satisfactory. By the use of an empirical correction rule, term values can be predicted to within a few hundred wave numbers.
Morse et al. (Sun,) studied this question.