Dysprosium

Dysprosium
Properties
Atomic symbol	Dy
Atomic number	66
Classification	Inner Transition metal
Atomic mass	162.5 amu
Other Information
Date of discovery	1886
Name of discoverer	Paul Emile Lecoq de Boisbaudran
Name origin	From the Greek dysprositos, 'hard to obtain'.
Uses	Nuclear reactors.
Obtained from	erbium or holmium

References

http://www.webelements.com/dysprosium/