Definition of Eurpium
The chemical element of atomic number 63, a soft silvery-white metal of the lanthanide series. Europium oxide is used with yttrium oxide as a red phosphor in color television screens.
Europium is the most reactive of the rare earth elements. There are no commercial applications for europium metal, although it has been used to dope some types of plastics to make lasers. Since it is a good absorber of neutrons, europium is being studied for use in nuclear reactors
Europium Element Video