Hafnium Element

Hafnium
Atomic Number	: 72
Atomic Weight	: 178.49
Boiling Point	: 4603^oC
Melting Point	: 2233^oC
Phase at Room Temperature:	: Solid
Element Classification:	: Metal
Period Number:	: 6
Discovered Year:	: 1923
Discovered by:	: Dirk Coster and George von Hevesey