Template:Infobox uranium/sandbox
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[[Category:Template:Pagetype with short description]]
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Uranium | |||||||||||||||
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Pronunciation | /jʊəˈreɪniəm/ | ||||||||||||||
Appearance | silvery gray metallic; corrodes to a spalling black oxide coat in air | ||||||||||||||
Standard atomic weight Ar, std(U) | Template:Val[1] | ||||||||||||||
Uranium in the periodic table | |||||||||||||||
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Atomic number (Z) | 92 | ||||||||||||||
Group | n/a | ||||||||||||||
Period | period 7 | ||||||||||||||
Block | f-block | ||||||||||||||
Electron configuration | [Rn] 5f3 6d1 7s2 | ||||||||||||||
Electrons per shell | 2, 8, 18, 32, 21, 9, 2 | ||||||||||||||
Physical properties | |||||||||||||||
Phase at STP | solid | ||||||||||||||
Melting point | 1405.3 K (1132.2 °C, 2070 °F) | ||||||||||||||
Boiling point | 4404 K (4131 °C, 7468 °F) | ||||||||||||||
Density (near r.t.) | 19.1 g/cm3 | ||||||||||||||
when liquid (at m.p.) | 17.3 g/cm3 | ||||||||||||||
Heat of fusion | 9.14 kJ/mol | ||||||||||||||
Heat of vaporization | 417.1 kJ/mol | ||||||||||||||
Molar heat capacity | 27.665 J/(mol·K) | ||||||||||||||
Vapor pressure
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Atomic properties | |||||||||||||||
Oxidation states | +1, +2, +3,[2] +4, +5, +6 (an amphoteric oxide) | ||||||||||||||
Electronegativity | Pauling scale: 1.38 | ||||||||||||||
Ionization energies |
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Atomic radius | empirical: 156 pm | ||||||||||||||
Covalent radius | 196±7 pm | ||||||||||||||
Van der Waals radius | 186 pm | ||||||||||||||
Spectral lines of uranium | |||||||||||||||
Other properties | |||||||||||||||
Natural occurrence | primordial | ||||||||||||||
Crystal structure | orthorhombic | ||||||||||||||
Speed of sound thin rod | 3155 m/s (at 20 °C) | ||||||||||||||
Thermal expansion | 13.9 µm/(m·K) (at 25 °C) | ||||||||||||||
Thermal conductivity | 27.5 W/(m·K) | ||||||||||||||
Electrical resistivity | 0.280 µΩ·m (at 0 °C) | ||||||||||||||
Magnetic ordering | paramagnetic | ||||||||||||||
Young's modulus | 208 GPa | ||||||||||||||
Shear modulus | 111 GPa | ||||||||||||||
Bulk modulus | 100 GPa | ||||||||||||||
Poisson ratio | 0.23 | ||||||||||||||
Vickers hardness | 1960–2500 MPa | ||||||||||||||
Brinell hardness | 2350–3850 MPa | ||||||||||||||
CAS Number | 7440-61-1 | ||||||||||||||
History | |||||||||||||||
Naming | after planet Uranus, itself named after Greek god of the sky Uranus | ||||||||||||||
Discovery | Martin Heinrich Klaproth (1789) | ||||||||||||||
First isolation | Eugène-Melchior Péligot (1841) | ||||||||||||||
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Pa ← |
→ Np | |
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Data sets read by {{Infobox element}} | |
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Standard atomic weight | |
most stable isotope | |
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Spectral lines image | |
Electron configuration (cmt, ref) | |
Term symbol * (cmt, ref) | |
Wikidata * | |
* Not used in {{Infobox element}} (2019-02-03) See also {{Infobox element/symbol-to--navbox}} |
References
- ↑ 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.
- ↑ 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.
- ↑ Standard Atomic Weights 2013. Commission on Isotopic Abundances and Atomic Weights
- ↑ Morss, L.R.; Edelstein, N.M.; Fuger, J., eds. (2006). The Chemistry of the Actinide and Transactinide Elements (3rd ed.). Netherlands: Springer. ISBN 9048131464.
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