Dysprosium

66
Dy
162.50

an old cathode ray tube TV set
Dysprosium is used in color TV Tubes.

Properties

Symbol Name Atomic Number Atomic Weight Group Number
Dy Dysprosium 66 162.50

Description

Standard State: solid at 298 K
Color: silvery white

Leoq de Boisbaudran discovered Dysprosium in 1886 , but it was not isolated unitl 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.