Atomic Number: 63
Atomic Weight: 151.964
Melting Point: 1095 K (822°C or 1512°F)
Boiling Point: 1802 K (1529°C or 2784°F)
Density: 5.24 grams per cubic centimeter
Phase at Room Temperature: Solid
Element Classification: Metal
Period Number: 6
Group Number: none
Group Name: Lanthanide
Europium has two stable isotopes and both are used for the production of radioisotopes. Eu-151 is used for the production of Eu-152 which is used as a reference source in gammaspectroscopy. Eu-153 can be used for the production of high specific activity Sm-153 via fast neutron irradiation.
