Beryllium Symbol Be Atomic Number 4 Atomic Weight 9.012182 Density 1.848 g/cc Melting Point 1287 degrees C Beryllium is one of the lightest metals known and is very hard with a high melting point, making it very desireable for use in aircraft and spacecraft.
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History. Tantalum was discovered in Sweden in 1802 by Anders Ekeberg. One year earlier, Charles Hatchett had discovered columbium (now niobium), and in 1809 the English chemist William Hyde Wollaston compared its oxide, columbite with a density of 5.918 g/cm 3, to that of tantalum, tantalite with a density of 7.935 g/cm 3.He concluded that the two oxides, despite their difference in measured
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Nuclear power plant in Dukovany, Czech Republic. Image credit Petr Adamek. (PhysOrg) The 440 commercial nuclear reactors in use worldwide are currently helping to minimize our consumption
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When refined, uranium is a silvery white, weakly radioactive metal.It has a Mohs hardness of 6, sufficient to scratch glass and approximately equal to that of titanium, rhodium, manganese and niobium.It is malleable, ductile, slightly paramagnetic, strongly electropositive and a poor electrical conductor. Uranium metal has a very high density of 19.1 g/cm 3, denser than lead (11.3 g/cm 3), but
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Tickers PINXPAWEF, XTSXNAM Tags Mining The amended January 9, 2019 NI 43 101 Mineral Resource Estimate confirms that the River Valley Project has 2,867,000 Measured and Indicated PdEq ounces, with 1,059,000 PdEq ounces in Inferred at a 0.35 g/t and 2.0 g/t PdEq cut off for open pit and underground respectively. The amended and restated Mineral Resource Estimate presents a Mineral