Periodic Table · element
Tantalum
Ta · Z 73
- atomic number
- 73
- atomic mass
- 180.95
- notation
- Ta
- group
- 5: Vanadium
- period
- 6
- state0c
- Solid
- state20c
- Solid
- occurrence
- Primordial
- density
- 16.69
- melting pt
- 3020
- boiling pt
- 5458
- discovered
- 1802
- abundance
- 2
- ore grade
- 300
- ore minerals
- tantalite-columbite (coltan); in tin slags
- mined as
- Primary
extraction
Coltan is gravity-concentrated, often by hand in Central Africa, or recovered from tin smelter slag. The concentrate is dissolved in hydrofluoric acid, tantalum separated from niobium by solvent extraction, and reduced with sodium to a powder for capacitors.
categories
#Transition Metal#Metal
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