Ta
TANTALUM
Definition :from king 'tantalus' of greek mythology. it is higly resistant in corrosion and occurs only in the mineral tantalite.
Discovery :1820
Uses :cutting tools, vacuum furnace parts
Group of Elements :Early transition metals(Solid)
Atomic Weight :180.94788
Oxidation State :+5
Melting Point :2996
Boiling Point :5425
Density :16.63 g/cm3
Electronegativity :1.5