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Matsumoto, Paul S. – Journal of Chemical Education, 2005
A rationale for the difference in the periodic trends in the ionization energy of the transition-metal elements versus the main-group elements is presented. The difference is that in the transition-metal elements, the electrons enter an inner-shell electron orbital, while in the main-group elements, the electrons enter an outer-shell electron…
Descriptors: Chemistry, Molecular Structure, Energy, Scientific Concepts

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