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Uranium

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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232U
synth
233U
trace
234U
0.005%
235U
0.720%
236U
trace
238U
99.3%

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Overview

Characteristics

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History

Occurrence

Compounds

Isotopes

Human exposure

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Uranium

Nodes485
Edges484
Triples402
Avg. degree2
Density0.004124
Components1

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Uranium

Top relations

related to Fission research · 42
Uranium → Alfred, Americans, An, Berlin, Chicago, Chicago Pile-1, Confirmation, Dean, December, Despite, Enrico Fermi, February, Fermi, Fritz Strassmann, Further, German, Germany, Germany's, Hahn's, Haigerloch
related to Sources cited · 28
Uranium → An, Chemical Elements, Company, Date, Elements, Emsley, England, Glenn, Groves, Guide, Harper, Illinois, ISBN, John, LCCN, Leslie, Manhattan Project, Nature's Building Blocks, New York, Now It Can Be
related to External links · 23
Uranium → Alsos Digital LibraryNLM Hazardous, Annotated, Chemical HazardsATSDR Case Studies, Department, Encyclopædia Britannica, Energy Information AdministrationWorld Uranium, Environmental Medicine, February, Health, Human ServicesUranium, NIOSH Pocket Guide, Nottingham, Nuclear, RadioactiveCDC, Substances Databank, The Periodic Table, University, Uranium Toxicity Archived, Videos, Vol
related to Discovery · 21
Uranium → Analytical Chemistry, Arts, Berlin, Central School, Conservatoire National, Eugène-Melchior Péligot, German, Greek, He, In, Klaproth, Manufactures, Martin Heinrich Klaproth, Métiers, Paris, Professor, The, Uranit, Uranus, While
related to Pre-discovery use · 21
Uranium → AD, Bohemia, Cape Posillipo, Czech Republic, Gulf, Gunther, Habsburg, In, Italy, Joachimsthal, Jáchymov, Middle Ages, Naples, Ore Mountains, Oxford, Roman, Roman Empire, Starting, The, University
related to Nuclear weaponry · 20
Uranium → As, Atomic, August, Chevron, Exploding, Fat Man, Hiroshima, In, Japan, Little Boy, Manhattan Project, Nagasaki, Rand, South Africa, TNT, Trinity, Two, Union Carbide, United States, World War II
related to Biotic and abiotic · 19
Uranium → After, BSAR-1, Burkholderia, Citrobacter, Geobacter, Glomus, However, In, IV, Other, PhoK, Recent, Shewanella, Some, Sphingomonas, The, This, Trapelia, VI
related to Supplies · 18
Uranium → Argentina, Australia, Canada, China, In, India, Kazakhstan, Most, Namibia, Niger, Russia, Somalia, South Africa, The, Ukraine, UN, United States, Uzbekistan
related to Production and mining · 16
Uranium → Athabasca Basin, Australia, Canada, Extensive, High-grade, Kazakhstan, Low-grade, Namibia, Other, Russia, Saskatchewan, The, U3O8, Uzbekistan, Worldwide, Yellowcake
related to Military · 14
Uranium → At, Balkans, Depleted, DU, Due, Gulf War, Other, Persian Gulf, Tank, The, This, UK, US, While

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Important terminology

nuclear uranium-235 uranium-238 used metal fissile isotopes fission water weapons half-life decay natural fuel isotope neutrons also use radioactive first

Entity relationships Subject–Predicate–Object triples

SubjectPredicateObjectConfidenceSrc
Uranium232Usynth1.00infobox
Uranium233Utrace1.00infobox
Uranium234U0.005%1.00infobox
Uranium235U0.720%1.00infobox
Uranium236Utrace1.00infobox
Uranium238U99.3%1.00infobox
UraniumAppearancesilvery gray metallic; corrodes to a spalling black oxide coat in air1.00infobox
Uraniumat T (K)23251.00infobox
UraniumAtomic number (Z)921.00infobox
UraniumAtomic radiusempirical: 156 pm1.00infobox
UraniumBlockf-block1.00infobox
UraniumBoiling point4404 K ​(4131 °C, ​7468 °F)1.00infobox
UraniumBrinell hardness2350–3850 MPa1.00infobox
UraniumBulk modulus100 GPa1.00infobox
UraniumCAS Number7440-61-11.00infobox
UraniumCovalent radius196±7 pm1.00infobox
UraniumCrystal structure​orthorhombic (oS4)1.00infobox
UraniumDensity (at 20° C)19.050 g/cm31.00infobox
UraniumDiscoveryMartin Heinrich Klaproth (1789)1.00infobox
UraniumElectrical resistivity0.280 µΩ⋅m (at 0 °C)1.00infobox
UraniumElectron configuration[Rn] 5f3 6d1 7s21.00infobox
UraniumElectronegativityPauling scale: 1.381.00infobox
UraniumElectrons per shell2, 8, 18, 32, 21, 9, 21.00infobox
UraniumFirst isolationEugène-Melchior Péligot (1841)1.00infobox
UraniumGroupf-block groups (no number)1.00infobox
UraniumHeat of fusion9.14 kJ/mol1.00infobox
UraniumHeat of vaporization417.1 kJ/mol1.00infobox
UraniumIonization energies1st: 597.6 kJ/mol1.00infobox
UraniumIonization energies2nd: 1420 kJ/mol1.00infobox
UraniumLattice constantsa = 285.35 pm b = 586.97 pm c = 495.52 pm (at 20 °C)1.00infobox

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