Symbol U Atomic radius: pm 139 Fusion: kJ/Mole 9.14
Name Uranium Ionic radius: pm (+6)73 Boiling point: °C 4131
Atomic number 92 Electron affinity - Melting point: °C 1135
Atomic weight 238.0 1st  ion potential 6.27 Specific Heat Cap: J/(g K) 0.12
Classification Trans metal Natural form Solid Thermal Cond: W/(cm K) 0.28
Configuration [Rn]5f36d17s2 Crystal structure Ortho Electrical Cond 0.0380
Oxidation states 3,4,5,6 Density 19.1 Abundance: mg/kg-crust 2.7
Electronegativity - Vaporization: kJ/Mole 423.0    
Although uranium was discovered in 1789 by Martin Heinrich Klaproth, it was first isolated in 1841 by Eugène-Melchior Péligot. Uses - nuclear reactor fuel, synthesis of isotopes, x-ray targets for production of high energy x-rays