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Uranium is a chemical element with the symbol U and atomic number 92. It is a silvery-grey metal in the actinide series of the periodic table. A uranium atom has 92 protons and 92 electrons, of which 6 are valence electrons. Uranium radioactively decays, usually by emitting an alpha particle.
Soluble uranium salts are toxic, though less so than those of other heavy metals such as lead or mercury. The organ which is most affected is the kidney . Soluble uranium salts are readily excreted in the urine , although some accumulation in the kidneys does occur in the case of chronic exposure.
Sample of uranium ore. Uranium ore deposits are economically recoverable concentrations of uranium within Earth's crust. Uranium is one of the most common elements in Earth's crust, being 40 times more common than silver and 500 times more common than gold. [1] It can be found almost everywhere in rock, soil, rivers, and oceans. [2]
Uranium has been hot this year, industry experts say. The trouble is there may not be enough to go around. The squeeze on the metal, found in rocks and seawater, intensified recently after 22 ...
It's easy to lose track of nuclear news out of Oak Ridge. Here's why the Sept. 4 announcement was so different.
The uranium for conventional reactors is enriched up to 5% and HALEU is uranium enriched between 5-20%. Highly enriched uranium is anything more than 20% and is used in weapons or naval submarines.
Uranium-233 is made from thorium-232 by neutron bombardment. Uranium-235 is important for both nuclear reactors (energy production) and nuclear weapons because it is the only isotope existing in nature to any appreciable extent that is fissile in response to thermal neutrons, i.e., thermal neutron capture has a
The largest uranium producer in the United States is ramping up work just south of Grand Canyon National Park on a long-contested project that largely has sat dormant since the 1980s. The Biden ...