Symbol Eu Atomic radius: pm 199 Fusion: kJ/Mole 9.21
Name Europium Ionic radius: pm (+3)107 Boiling point: °C 1529
Atomic number 63 Electron affinity - Melting point: °C 822
Atomic weight 152.0 1st  ion potential 5.67 Specific Heat Cap: J/(g K) 0.18
Classification Trans metal Natural form Solid Thermal Cond: W/(cm K) 0.14
Configuration [Xe]4f76s2 Crystal structure BCC Electrical Cond 0.0112
Oxidation states 2,3 Density 5.24 Abundance: mg/kg-crust 2.0
Electronegativity - Vaporization: kJ/Mole 176.0    
Europium was discovered in 1896 by Eugène-Anatole Demarçay.   He isolated it into a pure fraction in 1901. Uses - alloys, color TV phosphor, nuclear control applications