Cithakan:Kotak info uranium

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Uranium,  92U
Two hands in brown gloves holding a blotched gray disk with a number 2068 hand-written on it
General properties
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Bobot atom standar (Ar, standard)238.02891(3)[1]
Uranium in the periodic table
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 Iron Cobalt Nickel Copper Zinc Gallium Germanium Arsenic Selenium Bromine Krypton
Rubidium Strontium Yttrium Zirconium Niobium Molybdenum Technetium Ruthenium Rhodium Palladium Silver 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 Gold Mercury (element) Thallium Lead 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 Nihonium Flerovium Moscovium Livermorium Tennessine Oganesson
Nd

U

(Uqb)
protaktiniumuraniumneptunium
Atomic number (Z)92
Groupgroup 3
Periodperiod 7
Blokf-block
Konfigurasi èlèktron[Rn] 5f3 6d1 7s2
Electrons per shell
2, 8, 18, 32, 21, 9, 2
Sipat angga
Phase at STPpadat
Melting point1405,3 K ​(1132,2 °C, ​2070 °F)
Boiling point4404 K ​(4131 °C, ​7468 °F)
Density (near r.t.)19,1 g/cm3
when liquid (at m.p.)17,3 g/cm3
Heat of fusion9,14 kJ/mol
Heat of vaporization417,1 kJ/mol
Molar heat capacity27,665 J/(mol·K)
Vapor pressure
P (Pa) 1 10 100 1 k 10 k 100 k
at T (K) 2325 2564 2859 3234 3727 4402
Atomic properties
Oxidation states6, 5, 4, 3[2]
(Oksida basa lemah)
ElectronegativityPauling scale: 1,38
Atomic radiusempirical: 156 pm
Covalent radius196±7 pm
Van der Waals radius186 pm
Color lines in a spectral range
Miscellanea
Crystal structure ​ortorombik
Speed of sound 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 µ Ω·m (at 0 °C)
Magnetic orderingparamagnetik
Young's modulus208 GPa
Shear modulus111 GPa
Bulk modulus100 GPa
Poisson ratio0,23
CAS Number7440-61-1
Main isotopes of uranium
Iso­tope Abun­dance Half-life (t1/2) Decay mode Pro­duct
232U syn 68,9 thn SF
α 5,414 228Th
233U syn 159.200 thn SF 197,93[3]
α 4,909 229Th
234U 0,0054% 245.500 thn SF 197,78
α 4,859 230Th
235U 0,7204% 7.038×108 thn SF 202,48
α 4,679 231Th
236U Kelumit 2,342×107 thn SF 201,82
α 4,572 232Th
238U 99,2742% 4,468×109 thn α 4,270 234Th
SF 205,87
ββ
| references | in Wikidata

Réferènsi

  1. Meija, J.; 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. The Chemistry of the Actinide and Transactinide Elements: Third Edition by L.R. Morss, N.M. Edelstein, J. Fuger, eds. (Netherlands: Springer, 2006.)
  3. BNL-NCS 51363, vol. II (1981), pages 835ff