Abstract
THE Hund theory of spectra includes, as an essential part of it, a prediction of the individual levels of an ion to which component term sequences will converge. The evidence supporting the predictions seem reasonably good in cases of spectra the character of which is determined by less than half-filled electron groups. On the other hand, the following two items of evidence seem to indicate that the theoretical predictions are not fulfilled in spectra determined by nearly completed electron groups.
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SHENSTONE, A. An Apparent Failure of the Hund Theory. Nature 121, 619 (1928). https://doi.org/10.1038/121619a0
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DOI: https://doi.org/10.1038/121619a0
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