A rare, dense, silvery-white metallic element with a very high melting point, extracted chiefly from molybdenite and used for electrical contacts, with tungsten for high-temperature thermocouples, and as a catalyst for refining hydrocarbon fuels. Atomic number 75; atomic weight 186.2; melting point 3,185°C; boiling point 5,596°C; specific gravity 20.8 (20°C); valence 1, 2, 3, 4, 5, 6, 7.
A rare, metallic chemical element that is a silver-white solid or a gray-to-black powder, used in thermocouples, electrodes, etc.: symbol, Re; at. no. 75
A very rare, dense, silvery-white metallic element with a very high melting point. It is used to make catalysts and electrical contacts. Atomic number 75; atomic weight 186.2; melting point 3,180°C; boiling point 5,627°C; specific gravity 21.02; valence 1, 2, 3, 4, 5, 6, 7.
A metallic chemical element (symbol Re) with an atomic number of 75.
Origin of rhenium
- From Latin Rhēnus , the Rhine
From American Heritage Dictionary of the English Language, 5th Edition
- From Latin Rhenus (“Rhine").