75 Re Rhenium
Transition metal, mass: 186.21 u, 1 stable isotope (185), but nearly twice as frequent is 187Re with a half-life of 4.12*1010 years. Abundance rank (earth/space): 79/79Click image to magnify. Pure rhenium bead, about 1.5 grams. Original size in cm: 0.5 x 0.5
Rhenium is a very rare, hard, heavy, silvery metal, which is relatively noble. In nature, it only occurs in compounds in low concentrations, which makes its extraction very laborious and expensive. Rhenium is used as additive in alloys, on which high demands in temperature and durability are made, like in aircraft turbines.
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Page last changed on November 09. 2009
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