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Uranium is a chemical element; it has symbol U and atomic number 92. It is a silvery-grey metal in the actinide series of the periodic table. A uranium atom has 92 protons and 92 electrons, of which 6 are valence electrons. Uranium radioactively decays, usually by emitting an alpha particle. The half-life of this decay varies between 159,200 and 4.5…
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nuclear uranium-235 uranium-238 used metal fissile isotopes fission water weapons half-life decay natural fuel isotope neutrons also use radioactive first
| Subject | Predicate | Object | Confidence | Src |
|---|---|---|---|---|
| Uranium | 232U | synth | 1.00 | infobox |
| Uranium | 233U | trace | 1.00 | infobox |
| Uranium | 234U | 0.005% | 1.00 | infobox |
| Uranium | 235U | 0.720% | 1.00 | infobox |
| Uranium | 236U | trace | 1.00 | infobox |
| Uranium | 238U | 99.3% | 1.00 | infobox |
| Uranium | Appearance | silvery gray metallic; corrodes to a spalling black oxide coat in air | 1.00 | infobox |
| Uranium | at T (K) | 2325 | 1.00 | infobox |
| Uranium | Atomic number (Z) | 92 | 1.00 | infobox |
| Uranium | Atomic radius | empirical: 156 pm | 1.00 | infobox |
| Uranium | Block | f-block | 1.00 | infobox |
| Uranium | Boiling point | 4404 K (4131 °C, 7468 °F) | 1.00 | infobox |
| Uranium | Brinell hardness | 2350–3850 MPa | 1.00 | infobox |
| Uranium | Bulk modulus | 100 GPa | 1.00 | infobox |
| Uranium | CAS Number | 7440-61-1 | 1.00 | infobox |
| Uranium | Covalent radius | 196±7 pm | 1.00 | infobox |
| Uranium | Crystal structure | orthorhombic (oS4) | 1.00 | infobox |
| Uranium | Density (at 20° C) | 19.050 g/cm3 | 1.00 | infobox |
| Uranium | Discovery | Martin Heinrich Klaproth (1789) | 1.00 | infobox |
| Uranium | Electrical resistivity | 0.280 µΩ⋅m (at 0 °C) | 1.00 | infobox |
| Uranium | Electron configuration | [Rn] 5f3 6d1 7s2 | 1.00 | infobox |
| Uranium | Electronegativity | Pauling scale: 1.38 | 1.00 | infobox |
| Uranium | Electrons per shell | 2, 8, 18, 32, 21, 9, 2 | 1.00 | infobox |
| Uranium | First isolation | Eugène-Melchior Péligot (1841) | 1.00 | infobox |
| Uranium | Group | f-block groups (no number) | 1.00 | infobox |
| Uranium | Heat of fusion | 9.14 kJ/mol | 1.00 | infobox |
| Uranium | Heat of vaporization | 417.1 kJ/mol | 1.00 | infobox |
| Uranium | Ionization energies | 1st: 597.6 kJ/mol | 1.00 | infobox |
| Uranium | Ionization energies | 2nd: 1420 kJ/mol | 1.00 | infobox |
| Uranium | Lattice constants | a = 285.35 pm b = 586.97 pm c = 495.52 pm (at 20 °C) | 1.00 | infobox |
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