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EUROPIUM (63Eu151.965)

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Element Description

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
Boiling Point 1596°C Compressibility 8.29x10-6cm2/kg
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
Atomic Volume 28.9W/D


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