This article proposes a method to systematize isotopes in Mendeleev's Periodic Table, enhancing practical work.
The elements of D. I. Mendeleev’s Periodic System (Mendeleev’s Table) have the relative atomic weight calculated as the average value of the atomic weights of several isotopes. The number of these isotopes is quite large; however, there is a lack of convenient and accessible systematisation for practical work. This article proposes a method and a device for such systematisation.
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Аввакумов et al. (2026) studied this question.
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