Tantalum (Ta) — Element 73: Properties & Data | Aladdin Scientific
Tantalum(Ta) — Element 73
Tantalum (Ta) is a transition metal with atomic number 73 and atomic mass 180.948. It has melting point 3290 K (3017 °C), boiling point 5731 K (5458 °C), density 16.4 g/cm³. It sits in group 5 and period 6 of the periodic table and was discovered in 1802.
Key facts
| Atomic mass | 180.9479 u |
|---|---|
| Electron configuration | [Xe]6s2 4f14 5d3 |
| Oxidation states | +5 |
| Electronegativity (Pauling) | 1.5 |
| Atomic radius (van der Waals) | 217 pm |
| Ionization energy | 7.89 eV |
| Electron affinity | 0.322 eV |
| Melting point | 3290 K |
| Boiling point | 5731 K |
| Density | 16.4 g/cm³ |
| Standard state | Solid |
| Year discovered | 1802 |
Frequently asked questions
What is the electron configuration of tantalum?
The ground-state electron configuration of tantalum is [Xe]6s2 4f14 5d3.
What group and period is tantalum in?
Tantalum (Ta) is in group 5 and period 6 of the periodic table, classified as a transition metal.
What is the melting point of tantalum?
Tantalum melts at 3290 K (3017 °C).
What is the standard state of tantalum?
Tantalum is a solid at standard temperature and pressure.
Related elements
About this data: property values compiled from IUPAC Standard Atomic Weights (2021), the NIST Atomic Spectra Database, and PubChem. Curated by the Aladdin Scientific technical team. Last reviewed: .