AbstractsRelationships between the total energy E, the nuclear-electronic attraction energy V,,, and the interelectronic repulsion energy V,, are derived for isoelectronic series of atoms and ions. Using these, it is possible to determine V,,, and V,, for the members of such series from a knowledge of just their total energies. The method is applied to the ground and first excited states of the two-electron series, and the ground states of the three-and four-electron series, and the results are discussed. Beziehungen zwischen der Totalenergie E, der Kernelektronen-Anziehungsenergie V,, und der interelektronischen Abstossungs-energie V,, werden fur isoelektronische Reihen von Atomen und Ionen hergeleitet. Mittels dieser Beziehungen ist es moglich V,,, und V,, fur die Mitglieder solcher Reihen von ihren Total-energien zu bestimmen. Die Methode wird auf den Grundzustand und die ersten angeregten Zustande der Zweielektronenreihe und den Grundzustand der Drei-und Vierelektronenreihen angewandt.
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