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[Epub ahead of print] Unfortunately, there are two mistakes in my recent paper. Both relate to the equalities (16) in the text:The first of them was found by an anonymous person, to whom the author is indebted. The correct equalities are the next: (16) and (16 correct) are not constant for the set of two-electron atoms (ions). However, we found that the range of variation of the ratio (16 correct) is very narrow, and its magnitudes are close to 0.625. We aim to report these results in a separate paper.It should be underlined that the mistakes do not influence on any statements and conclusions in the considered study.