73 Ta 180.948
Tantalum
transition metal
Properties
- Atomic number
- 73
- Atomic mass
- 180.948 u
- Category
- transition metal
- Group
- 5
- Period
- 6
- Block
- d-block
- State (room temp)
- Solid
- Outer-shell electrons
- 2
- Electronegativity
- 1.5 (Pauling)
- Density
- 16.69 g/cm³
- Melting point
- 3016.85 °C
- Boiling point
- 5457.85 °C
Electron configuration
1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d¹⁰ 4p⁶ 5s² 4d¹⁰ 5p⁶ 6s² 4f¹⁴ 5d³
Noble-gas shorthand: [Xe] 4f¹⁴ 5d³ 6s²
Electrons per shell: 2, 8, 18, 32, 11, 2 — that's 2 in the outermost shell.
About Tantalum
Tantalum is a chemical element with symbol Ta and atomic number 73. Previously known as tantalium, its name comes from Tantalus, an antihero from Greek mythology. Tantalum is a rare, hard, blue-gray, lustrous transition metal that is highly corrosion-resistant.
- Discovered by Anders Gustaf Ekeberg
- Appearance: gray blue
Position in the periodic table
Data compiled from Wikipedia, PubChem, and IUPAC. Source.