73 Ta
Transition metal
Tantalum
Used in phone capacitors.
Properties of Tantalum
- Atomic number (Z)
- 73
- Symbol
- Ta
- Atomic mass
- 180.95 g/mol
- Category
- Transition metal
- Group
- 5
- Period
- 6
- Electron configuration
- [Xe] 4f¹⁴ 5d³ 6s²
- Electronegativity (Pauling)
- 1.5
- Atomic radius
- 200 pm
- First ionization energy
- 761 kJ/mol
- Melting point
- 3290 K (3016.8 °C)
- Boiling point
- 5731 K (5457.9 °C)
- Density
- 16.654 g/cm³
- Phase at 25 °C
- Solid
- Discovered
- Discovered in 1802