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Template:Infobox uranium

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Uranium, 92U
Template:Infobox element/symbol-to-top-image/alt
Uranium
Pronunciation/j[unsupported input]niəm/ (yoor-AY-nee-əm)
Appearancesillery gray metallic; corrodes tae a spallin black oxide coat in air
Standard atomic weight Ar, std(U)238.02891(3)[1]
Uranium in the periodic cairt
Hydrogen Helium
Lithium Beryllium Boron Carbon Nitrogen Oxygen Fluorine Neon
Sodium Magnesium Aluminium Silicon Phosphorus Sulfur Chlorine Argon
Potassium Calcium Scandium Titanium Vanadium Chromium Manganese Airn Cobalt Nickel Capper Zinc Gallium Germanium Arsenic Selenium Bromine Krypton
Rubidium Strontium Yttrium Zirconium Niobium Molybdenum Technetium Ruthenium Rhodium Palladium Siller (element) Cadmium Indium Tin Antimony Tellurium Iodine Xenon
Caesium Barium Lanthanum Cerium Praseodymium Neodymium Promethium Samarium Europium Gadolinium Terbium Dysprosium Holmium Erbium Thulium Ytterbium Lutetium Hafnium Tantalum Tungsten Rhenium Osmium Iridium Platinum Gowd Mercur (element) Thallium Leid (element) Bismuth Polonium Astatine Radon
Francium Radium Actinium Thorium Protactinium Uranium Neptunium Plutonium Americium Curium Berkelium Californium Einsteinium Fermium Mendelevium Nobelium Lawrencium Rutherfordium Dubnium Seaborgium Bohrium Hassium Meitnerium Darmstadtium Roentgenium Copernicium Ununtrium Flerovium Ununpentium Livermorium Ununseptium Ununoctium
Nd

U

(Uqh)
protactiniumuraniumneptunium
Atomic nummer (Z)92
Groupgroup n/a
Periodperiod 7
Blockf-block
Element category  Actinide
Electron confeeguration[Rn] 5f3 6d1 7s2
Electrons per shell2, 8, 18, 32, 21, 9, 2
Pheesical properties
Phase at STPsolid
Meltin pynt1405.3 K ​(1132.2 °C, ​2070 °F)
Bylin pynt4404 K ​(4131 °C, ​7468 °F)
Density (near r.t.)19.1 g/cm3
when liquid (at m.p.)17.3 g/cm3
Heat o fusion9.14 kJ/mol
Heat o vapourisation417.1 kJ/mol
Molar heat capacity27.665 J/(mol·K)
Vapour pressur
P (Pa) 1 10 100 1 k 10 k 100 k
at T (K) 2325 2564 2859 3234 3727 4402
Atomic properties
Oxidation states+1, +2, +3,[2] +4, +5, +6 waikly basic
ElectronegativityPauling scale: 1.38
Ionisation energies
  • 1st: 597.6 kJ/mol
  • 2nd: 1420 kJ/mol
Atomic radiusempirical: 156 pm
Covalent radius196±7 pm
Van der Waals radius186 pm
Colour lines in a spectral range
Colour lines in a spectral range
Spectral lines o uranium
Ither properties
Naitural occurrenceprimordial
Creestal structurorthorhombic
Orthorhombic creestal structur for uranium
Speed o soond thin rod3155 m/s (at 20 °C)
Thermal expansion13.9 µm/(m·K) (at 25 °C)
Thermal conductivity27.5 W/(m·K)
Electrical resistivity0.280 µΩ·m (at 0 °C)
Magnetic orderinparamagnetic
Young's modulus208 GPa
Shear modulus111 GPa
Bulk modulus100 GPa
Poisson ratio0.23
Vickers haurdness1960–2500 MPa
Brinell haurdness2350–3850 MPa
CAS Nummer7440-61-1
History
Naminefter planet Uranus, itsel named efter Greek god o the sky Uranus
DiskiveryMartin Heinrich Klaproth (1789)
First isolationEugène-Melchior Péligot (1841)
Main isotopes o uranium
Iso­tope Abun­dance Hauf-life (t1/2) Decay mode Pro­duct
232U syn 68.9 y SF
α 228Th
233U trace 1.592×105 y SF
α 229Th
234U 0.005% 2.455×105 y SF
α 230Th
235U 0.720% 7.04×108 y SF
α 231Th
236U trace 2.342×107 y SF
α 232Th 238U 99.274% 4.468×109 y α 234Th
SF
ββ 238Pu
| references
style="text-align:left"|
in calc from C diff report ref
C 1132.2
K 1405.3 1405.3 0
F 2070 2070.0 0
WD Edit this at Wikidata
input C: 1132.2, K: 1405.3, F: 2070
comment
style="text-align:left"|
in calc from C diff report ref
C 4131
K 4404 4404 0
F 7468 7468 0
WD Edit this at Wikidata
input C: 4131, K: 4404, F: 7468
comment
Uranium
Pa ←
iso
92
U E
→ Np
v · e

References

  1. Meija, Juris; et al. (2016). "Atomic weights of the elements 2013 (IUPAC Technical Report)". Pure and Applied Chemistry. 88 (3): 265–91. doi:10.1515/pac-2015-0305.
  2. Morss, L.R.; Edelstein, N.M.; Fuger, J., eds. (2006). The Chemistry of the Actinide and Transactinide Elements (3rd ed.). Netherlands: Springer. ISBN 978-9048131464.
  3. Morss, L.R.; Edelstein, N.M.; Fuger, J., eds. (2006). The Chemistry of the Actinide and Transactinide Elements (3rd ed.). Netherlands: Springer. ISBN 9048131464.