Yttrium
Yttrium is named for the Swedish village of Ytterby and was first isolated in 1794. Yttrium is recovered commercially from monzanite sand, which contains about 3%, and from bastnasite, which contains about 0.2%. Yttrium has a silvery-metallic luster and is relatively stable in air. Yttrium oxide is one of the most important compounds of yttrium and accounts for the largest use. It is widely used to make phosphors to give the red color in color television tubes.