Heavy, silver-white, metallic element, symbol Re, atomic number 75, atomic weight 186.2. It has chemical properties similar to those of manganese and a very high melting point (3,180şC/5,756şF), which makes it valuable as an ingredient in alloys.
It was identified and named in 1925 by German chemists W Noddack (1893–1960), I Tacke, and O Berg from the Latin name for the river Rhine.
A rare heavy polyvalent metallic element that resembles manganese chemically and is used in some alloys; is obtained as a by-product in refining molybdenum; SYN. Re, atomic number 75. + prikaži više