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The article was written for the 150th anniversary of the D.I. Mendeleev’s Periodic Law. The history behind the discovery of dvi-manganese - rhenium by D.I. Mendeleev has been explained. Rhenium as well as its compounds’ fields of application has been indicated. In addition, potential sources of rhenium in Russia have been identified.

Dvi-manganese - Rhenium is the youngest stable element of the Periodic Table