Promethium Element

Promethium
Atomic Number	: 61
Atomic Weight	: 145
Boiling Point	: 3000^oC
Melting Point	: 1042^oC
Phase at Room Temperature:	: Solid
Element Classification:	: Metal
Period Number:	: 6
Discovered Year:	: 1945
Discovered by:	: J. A. Marinsky, Lawrence Glendenin and Charles Coryell