Science Periodic Table - Elements - Uranium Symbol U Atomic Number 92 Relative Atomic Mass 12C = 12.0000 238.0289 Atomic Radius pm 154 First Ionisation Energy kJ mol-1 584 Electronegativity 1.38 Density kg m-3 18950 [293 K] 17907 [l.m .p.] Molar Volume cm3 12.56 Thermal Conductivity W m-1 K-1 27.6 [300 K] Melting Point K 1405.5 Boiling Point K 4018 Number of Isotopes 17 Ground State Electron Configuration [Rn]5f36d17s2 Term Symbol 5L6 Discovery Discovered by M.J. Klaproth (Berlin, Germany) in 1789 and isolated by W.M. Peligot (Paris, France) in 1841 Name Derived From Named after the planet Uranus Name in Other Languages  Croatian Uranij  Danish uran  Dutch uranium  Finnish uraani  French uranium  German Uran  Italian uranio  Norwegian uran  Portuguese urānio  Spanish uranio  Swedish uran Peter van der Krogt's Element Multidict - element name translations in over 48 langauges

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