Astatine Element

Astatine
Atomic Number	: 85
Atomic Weight	: 210
Boiling Point	: -340^oC
Melting Point	: 302^oC
Phase at Room Temperature:	: Solid
Element Classification:	: Semi-Metal
Period Number:	: 6
Discovered Year:	: 1940
Discovered by:	: Dale Corson, K. Mackenzie and E. Segre