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| Ìfarahàn |
silvery gray metallic; corrodes to a spalling black oxide coat in air
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| Àwọn ìní àníkárí |
| Orúkọ, àmì-ìdámọ̀, nọ́mbà |
uranium, U, 92 |
| Ẹ̀ka apilẹ̀sẹ̀ |
actinide |
| Àdìpọ̀, ìgbà, block |
n/a, 7, f |
| Ìwúwo átọ́mù |
238.02891(3) g·mol−1 |
| Ìtòjọ ẹ̀lẹ́ktrónì |
[Rn] 5f3 6d1 7s2 |
| Àwọn ẹ̀lẹ́ktrónì lórí ọ̀nà kan |
2, 8, 18, 32, 21, 9, 2 (Image) |
| Àwọn ìní aláfójúrí |
| Phase |
solid |
| Kíki (tó súnmọ́ r.t.) |
19.1 g·cm−3 |
| Liquid density at m.p. |
17.3 g·cm−3 |
| ojúàmì ìyọ́ |
1405.3 K, 1132.2 °C, 2070 °F |
| ajúàmì ìhó |
4404 K, 4131 °C, 7468 °F |
| Heat of fusion |
9.14 kJ·mol−1 |
| Heat of vaporization |
417.1 kJ·mol−1 |
| Specific heat capacity |
(25 °C) 27.665 J·mol−1·K−1 |
| 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 states |
6, 5, 4, 3[1]
(weakly basic oxide) |
| Electronegativity |
1.38 (Pauling scale) |
| Ionization energies |
1st: 597.6 kJ·mol−1 |
| 2nd: 1420 kJ·mol−1 |
| Atomic radius |
156 pm |
| Covalent radius |
196±7 pm |
| Van der Waals radius |
186 pm |
| Miscellanea |
| Crystal structure |
orthorhombic |
| Magnetic ordering |
paramagnetic |
| Electrical resistivity |
(0 °C) 0.280 µΩ·m |
| Thermal conductivity |
(300 K) 27.5 W·m−1·K−1 |
| Thermal expansion |
(25 °C) 13.9 µm·m−1·K−1 |
| Speed of sound (thin rod) |
(20 °C) 3155 m/s |
| Young's modulus |
208 GPa |
| Shear modulus |
111 GPa |
| Bulk modulus |
100 GPa |
| Poisson ratio |
0.23 |
| CAS registry number |
7440-61-1 |
| Most stable isotopes |
| Main article: Isotopes of uranium |
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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.
- ↑ The Chemistry of the Actinide and Transactinide Elements: Third Edition by L.R. Morss, N.M. Edelstein, J. Fuger, eds. (Netherlands: Springer, 2006.)
