Europium
Europium is named for Europe and was discovered in 1890. Europium is found along with the other rare-earth minerals principally in monazite and bastnasite. The metal is isolated using ion exchange and solvent extraction methods. Europium has a bright silver luster. Europium oxide is widely used as a phosphor activator and europium activated yttrium vanadate is in commercial use as the red phosphor in color tv tubes.