Promethium

Promethium
Properties
Atomic symbol	Pm
Atomic number	61
Classification	Metallic
Atomic mass	145 amu
Other Information
Date of discovery	1945
Name of discoverer	J.A. Marinsky, L.E. Glendenin and C.D. Coryell
Name origin	From Prometheus who stole the fire of the sky and gave it to mankind.
Uses	Used in highly specialized miniature batteries.
Obtained from	All the promethium originally present when the Earth formed has disappeared due to radioactive decay. Only very small trace amounts are found in uranium ores as a product of nuclear fission.