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Symbol Re. A silvery-white metallic transition element; a.n. 75; r.a.m. 186.2; r.d. 20.53; m.p. 3180°C; b.p. 5627 (estimated)°C. The element is obtained as a by-product in refining molybdenum, and is used in certain alloys (e.g. rhenium-molybdenum alloys are superconducting). The element forms a number of complexes with oxidation states in the range 1–7. It was discovered by Walter Noddack (1893–1960) and Ida Tacke (1896–1978) in 1925.

http://www.webelements.com/webelements/elements/text/Re/key.htm Information from the WebElements site

Subjects: Chemistry.

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