Gourt > Science > Chemistry > Elements > Uranium
Uranium is a chemical element in the periodic table that has the symbol U and atomic number 92. Heavy, silvery-white, metallic, naturally radioactive, uranium belongs to the actinide series. Its isotopes 235U and to a lesser degree 233U are used as the fuel for nuclear reactors and the explosive material for nuclear weapons. Depleted uranium (238U) is used in kinetic energy penetrators and armor plating
Notable characteristics
When refined, uranium is a silvery white, weakly radioactive metal, which is slightly softer than steel. It is malleable, ductile, and slightly paramagnetic. Uranium metal has very high density, 65% more dense than lead, but slightly less dense than gold. When finely divided, it can react with cold water; in air, uranium metal becomes coated with uranium oxide. Uranium in ores is extracted chemically and converted into uranium dioxide or other chemical forms usable in industry.
Uranium metal has three allotropic forms:
- alpha (orthorhombic) stable up to 667.7 °C
- beta (tetragonal) stable from 667.7 °C to 774.8 °C
- gamma (body-centred cubic) from 774.8 °C to melting point - this is the most malleable and ductile state.
Actinides :: Elements
Nuclear Fuel :: Nuclear
Uranium Mining and Milling :: Nuclear
Depleted Uranium :: Weapons
RT @buysellmines:Paladin:Kayelekera Mine Unaffected by Malawi Earthquakes http://bit.ly/8V3EKO #global_mining #mining_finance #news #uranium
ctenthani (Chifundo Tenthani) Sun, 20 Dec 2009 13:27:09 -0000
RT @buysellmines:Paladin:Kayelekera Mine Unaffected by Malawi Earthquakes http://bit.ly/8V3EKO #global_mining #mining_finance #news #uranium
Uranium http://alislam.montadamoslim.com/montada-f13/topic-t4952.htm#12145
eteralislam (eteralislam) Sun, 20 Dec 2009 12:58:29 -0000
Uranium http://alislam.montadamoslim.com/montada-f13/topic-t4952.htm#12145
Little coffee chez uranium .. Trop de fumée .. doivent installer des aspirateurs
sabrimahjoub (Sabri MAHJOUB) Sun, 20 Dec 2009 12:47:41 -0000
Little coffee chez uranium .. Trop de fumée .. doivent installer des aspirateurs
Paladin Energy Ltd: Kayelekera Mine Unaffected by Malawi Earthquakes http://bit.ly/8V3EKO #global_mining #mining_finance #news #uranium
buysellmines (Vladimir) Sun, 20 Dec 2009 12:38:38 -0000
Paladin Energy Ltd: Kayelekera Mine Unaffected by Malawi Earthquakes http://bit.ly/8V3EKO #global_mining #mining_finance #news #uranium
Tehran says it favours deal on uranium but asks for more time - guardian.co.uk http://ow.ly/15WUKi http://bit.l.. http://bit.ly/5offsS
froggyfrog02 (froggyfrog) Sun, 20 Dec 2009 12:32:41 -0000
Tehran says it favours deal on uranium but asks for more time - guardian.co.uk http://ow.ly/15WUKi http://bit.l.. http://bit.ly/5offsS
Uranium Clean Energy http://tinyurl.com/yavaqaq
santipinto (santiago pinto) Sun, 20 Dec 2009 12:26:44 -0000
Uranium Clean Energy http://tinyurl.com/yavaqaq
Nuclear Power Information Centre - The UIC web site is to assist public understanding of uranium mining and nuclear electricity generation.
Meta Description: [ The UIC web site is to assist public understanding of uranium mining and nuclear electricity generation. ]
ChemGlobe: Uranium - Electronic, thermal, and steric data along with an isotope table.
Meta Description: [ The chemical element [U] - Uranium - Datasheet ]
ChemicalElements.com: Uranium - Basic information, atomic structure, and isotopes.
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Depleted Uranium - Information about depleted uranium in question and answer form.
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EnvironmentalChemistry.com: Uranium - Atomic structure, chemical and physical properties, and table of nuclides.
It's Elemental - Isotopes of the Element Uranium - Has an extensive list about the isotopes of uranium. Gives mass number, half life, branching percentage, and decay mode of the isotopes.
Meta Description: [ The Element Uranium - Known Isotopes ]
It's Elemental: Uranium - Basic physical and historical information.
Meta Description: [ The Element Uranium - Basic Physical and Historical Information ]
LANL: Uranium - Sources, properties, isotopes, and uses.
Lenntech: Uranium - Physical data, chemical properties, health and environmental effects.
Meta Description: [ chemical properties, health and environmental effects of uranium ]
Radioactive Byproducts of Depleted Uranium (Uranium-238) - Shows the byproducs of depleted uranium and shows their half-lives.
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Uranium - Several data tables with information about the properties of uranium, as well as an extensive history about it.
Uranium (Element) - Some quick facts about uranium, including all the basic info.
Uranium and Its Compounds - Facts about uranium and its compounds, including physical and chemical properties, uses, and possible health effects.
Meta Description: [ Facts about uranium and its compounds, including physical and chemical properties, uses, and possible health effects. ]
Uranium-235 Chain Reaction - Shows examples uranium reactions in fission, as well as data about those reactions.
Uranium: Properties: Element - Very extensive information about the chemical/physical properties of uranium. Information includes the occurrence of uranium, isotopes, and spectrum.
Visual Elements: Uranium - Image, animation, source, use, and key isotopes.
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WebElements: Uranium - Extensive information on history, uses, occurrence, compounds, and properties.
Meta Description: [ This WebElements periodic table page contains key information for the element uranium ]
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WebElements: Uranium - Has extensive information about the properties of uranium.
Meta Description: [ This WebElements periodic table page contains chemical reaction data for the element uranium ]
WHO: Depleted Uranium - Information about depleted uranium and its potential health effects.
Wikipedia: Uranium - Properties of the element, including its history, applications, and characteristics.
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