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Uranium, 92 U Uranium Pípè / j ʊəˈr eɪ n i ə m / (ewr-AY -nee-əm ) Ìhànsójú silvery gray metallic; corrodes to a spalling black oxide coat in air Ìwúwo átọ̀mù A r, std (U) 238.0289 1(3) [1] Uranium ní orí tábìlì àyè
Nọ́mbà átọ̀mù (Z ) 92 Ẹgbẹ́ group n/a Àyè àyè 7 Àdìpọ̀ Àdìpọ̀-f Ẹ̀ka ẹ́límẹ́ntì Actinide Ìtò ẹ̀lẹ́ktrọ́nù [Rn ] 5f3 6d1 7s2 Iye ẹ̀lẹ́ktrọ́nù lórí ìpele kọ̀ọ̀kan 2, 8, 18, 32, 21, 9, 2 Àwọn ohun ìní ara Ìfarahàn at STP solid Ìgbà ìyọ́ 1405.3 K (1132.2 °C, 2070 °F) Ígbà ìhó 4404 K (4131 °C, 7468 °F) Kíki (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 417.1 kJ/mol Molar heat capacity 27.665 J/(mol·K) pressure
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 Àdàkọ:Infobox element/symbol-to-oxidation-state/comment Electronegativity Pauling scale: 1.38 Atomic radius empirical: 156 pm Covalent radius 196±7 pm Van der Waals radius 186 pm Spectral lines of uraniumOther 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 µ Ω·m (at 0 °C) Magnetic ordering paramagnetic Young's modulus 208 GPa Shear modulus 111 GPa Bulk modulus 100 GPa Poisson ratio 0.23 CAS Number 7440-61-1 Main isotopes of uranium
Àdàkọ:Category-inline | references
Ùráníọ̀m tabi Uranium je apilese kemika onide bi fadaka funfun ninu eseese aktinidi ti tabili igba to ni nomba atomu 92. O ni ami-idamo kemika U . Atomu uraniom kan ni 92 awon protoni 92 ati awon elektroni 92.
↑ Meija, Juris; Coplen, Tyler B.; Berglund, Michael; Brand, Willi A.; De Bièvre, Paul; Gröning, Manfred; Holden, Norman E.; Irrgeher, Johanna 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 .
↑ The Chemistry of the Actinide and Transactinide Elements (3rd ed.). Netherlands: Springer. 2006. ISBN 978-9048131464 .
↑ The Chemistry of the Actinide and Transactinide Elements: Third Edition by L.R. Morss, N.M. Edelstein, J. Fuger, eds. (Netherlands: Springer, 2006.)