Dysprosium is used in color TV Tubes.
Standard State: solid at 298 K
Color: silvery white
Leoq de Boisbaudran discovered Dysprosium in 1886 , but it was not isolated
until the ion-exchange separation was developed. Dysprosium is relatively stable at room temperature and is quickly attacked and will
dissolve. The metal is soft enough to be cut with a knife and if the metal was to
machined it would cause no spark it was not overheated. The only use for Dysprosium
is a oxide-nickel cement used in cooling nuclear reactor control rods.