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A problem with explaining the electron configuration of scandium
Foundations of Chemistry ( IF 0.9 ) Pub Date : 2021-01-20 , DOI: 10.1007/s10698-020-09392-2
Geoffrey R. H. Neuss

The statements and arguments based on experimental evidence used to support the claim that the 3d sub-level is below the 4s sub-level in scandium are examined. The flaw in all the arguments is that they assume the order in which the 3d and 4s sub-levels arrange remains the same in both the neutral atom and in its ions. Analysis of the ground and excited states of atomic spectra shows that as the number of electrons relative to the nuclear charge increases, the 3d level moves higher in energy relative to the 4s level. It is perfectly possible that in a neutral scandium atom the 3d sub-level is above the 4s sub-level and that when it ionizes the energy levels simultaneously rearrange during the process.



中文翻译:

解释explaining的电子构型存在问题

基于实验证据的陈述和论点用于支持3d子级别低于scan中4s子级别的说法。所有论据的缺陷在于,它们假设3d和4s子级在中性原子及其离子中的排列顺序保持不变。对原子光谱的基态和激发态的分析表明,随着相对于核电荷的电子数量增加,3d能级的能量相对于4s能级更高。极有可能在中性scan原子中3d子能级高于4s子能级,并且当它电离能级时,在此过程中会同时重新排列。

更新日期:2021-01-20
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