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Abstract Wave functions for the normal configurations of neutral nitrogen and N- have been calculated by the method of the self-consistent field with exchange (Fock’s equations). To the accuracy of the approximation represented by these equations, the N- ion would be unstable and liable to auto-ionization, but it is estimated that a better approximation of the treatment of a many-electron atom would give a small positive ionization potential for N-. Revised wave functions for Na+ and the normal state of neutral Na have also been calculated. Tables of results are given.
Hartree et al. (1948) studied this question.