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- Q898927 subject Q7162170.
- Q898927 subject Q8417818.
- Q898927 abstract "When an atom has more than one electron there will be some electrostatic repulsion between those electrons. The amount of repulsion varies from atom to atom, depending upon the number and spin of the electrons and the orbitals they occupy. The total repulsion can be expressed in terms of three parameters A, B and C which are known as the Racah parameters after Giulio Racah, who first described them. They are generally obtained empirically from gas-phase spectroscopic studies of atoms.They are often used in transition-metal chemistry to describe the repulsion energy associated with an electronic term. For example, the interelectronic repulsion of a 3P term is A + 7B, and of a 3F term is A - 8B, and the difference between them is therefore 15B.".
- Q898927 wikiPageExternalLink eder.pdf.
- Q898927 wikiPageWikiLink Q133673.
- Q898927 wikiPageWikiLink Q1628729.
- Q898927 wikiPageWikiLink Q2225.
- Q898927 wikiPageWikiLink Q26336.
- Q898927 wikiPageWikiLink Q483666.
- Q898927 wikiPageWikiLink Q53860.
- Q898927 wikiPageWikiLink Q635353.
- Q898927 wikiPageWikiLink Q7162170.
- Q898927 wikiPageWikiLink Q727832.
- Q898927 wikiPageWikiLink Q8417818.
- Q898927 wikiPageWikiLink Q908350.
- Q898927 wikiPageWikiLink Q9121.
- Q898927 comment "When an atom has more than one electron there will be some electrostatic repulsion between those electrons. The amount of repulsion varies from atom to atom, depending upon the number and spin of the electrons and the orbitals they occupy. The total repulsion can be expressed in terms of three parameters A, B and C which are known as the Racah parameters after Giulio Racah, who first described them.".
- Q898927 label "Racah parameter".