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Europium is a silvery-white rare earth belonging to the lanthanide group. The metal's hardness is comparable to lead and it is very ductile. Europium, the most reactive of the rare earth metals, quickly oxidizes in air and resembles calcium in its reactions with water.
|Property Name||Property Value||Property Name||Property Value|
|Atomic Code||(63Eu151.965)||First Ionization Energy||131K-cal/g-mole|
|CAS #||7440-53-1||Covalent Radius||1.85Angstroms|
|Electrical Resistivity @ 298°C||91.0µΩ-cm|
|Melting Point||822°C||Crystal Structure||Cubic, body centered|
|Density||5.244g/cm3||Thermal Neutron Cross Section||4600barns/atom|
|Specific Heat @ 25°C||0.039cal/g°C||Magnetic Moment||7.12Bohr magnetons|
|Heat of Fusion||2.2k-cal/g-atom||Magnetic Susceptibility||33,100x10-6emu/mole|
|Heat of Vaporization||42k-cal/g-atom||Standard Electrode Potential||+2.2volts|