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uranium    音标拼音: [jɚ'eniəm]
n. 铀

铀

uranium
n 1: a heavy toxic silvery-white radioactive metallic element;
occurs in many isotopes; used for nuclear fuels and nuclear
weapons [synonym: {uranium}, {U}, {atomic number 92}]

Uranium \U*ra"ni*um\, n. [NL., from Uranus the planet. See
{Uranus}.] (Chem.)
An element of the chromium group, found in certain rare
minerals, as pitchblende, uranite, etc., and reduced as a
heavy, hard, nickel-white metal which is quite permanent. Its
yellow oxide is used to impart to glass a delicate
greenish-yellow tint which is accompanied by a strong
fluorescence, and its black oxide is used as a pigment in
porcelain painting. Symbol U. Atomic weight 239.
[1913 Webster]

Note: Uranium was discovered in the state of an oxide by
Klaproth in 1789, and so named in honor of Herschel's
discovery of the planet Uranus in 1781.
[1913 Webster] Uran-ocher


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  • Uranium - Wikipedia
    Uranium is a chemical element; it has 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
  • Uranium | Definition, Properties, Uses, Facts | Britannica
    uranium (U), radioactive chemical element of the actinoid series of the periodic table, atomic number 92 It is an important nuclear fuel Uranium constitutes about two parts per million of Earth’s crust
  • What is Uranium? | IAEA
    Uranium is a naturally occurring radioactive element, which has the atomic number of 92 and corresponds to the chemical symbol U in the periodic table It belongs to a special group of elements called “actinides” — elements that were discovered relatively late in history
  • Uranium ore - Wikipedia
    Uranium is a silvery-gray, weakly radioactive metallic chemical element It has the chemical symbol U and atomic number 92 The most common isotopes in natural uranium are 238 U (99 274%) and 235 U (0 711%)
  • Nuclear Fuel Facts: Uranium - Department of Energy
    Uranium is a silvery-white metallic chemical element in the periodic table, with atomic number 92 It is assigned the chemical symbol U A uranium atom has 92 protons and 92 electrons, of which 6 are valence electrons Uranium has the highest atomic weight of all naturally occurring elements
  • Radionuclide Basics: Uranium - US EPA
    Uranium (chemical symbol U) is a naturally occurring radioactive element Uranium is a primordial element that is used in nuclear power generation Uranium is no longer mined for defense purposes
  • What is Uranium Used For? - WorldAtlas
    Uranium is a crucial compound that is used to power the nuclear power plants which generate electricity
  • Uranium Store - Buy uranium ore samples and more.
    Uranium ore and other radioactive items for sale Uraniumstore Montana USA
  • DISA Uranium
    DISA Uranium cleans up the nation’s legacy uranium sites and is advancing a growing base of conventional mines across the West toward production — using our patented HPSA® technology to remediate waste, concentrate uranium on site, and unlock supply that conventional methods leave stranded
  • Uranium | U. S. Geological Survey - USGS. gov
    To assure adequate uranium to supply electricity from nuclear power, the US Geological Survey is working to better understand the genetic controls, distribution, and quantities of domestic uranium





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