Europium is used in color TV tubes.
Standard State: solid at 298 K
Color: Silvery White
Demaracy was originally credited with the discovery of Europium, when he separated it
from earth in 1901. The pure metal was not formed until recent years. Europium is the most reactive of the rare-earth elements. Europium is about as
hard as lead and oxidizes very rapidly in air. Europium oxide is most commonly used
in color television sets as the red phosphor contain in TV tubes. This element is
the rarest of the rare-earth elements.