Tantalum
Electron Configuration
|
General Properties
| Atomic Symbol | Ta |
| Atomic Weight | 180.9479 g/mol |
| Element Number | 73 |
| Standard State | Solid |
| Standard Type | Strongly Basic |
| Date of Discovery | 1802 |
| Discoverer | Ekeberg |
Physical Properties
| Oxidation States | 5 |
| Boiling Point | 5730 K |
| Melting Point | 3293 K |
| Density | 16.65 g/cm³ |
| Electron Configuration | [Xe]4f14,5d3,6s2 |
| Acid/Base Properties | Acidic |
| Crystal Structure | Cubic, body centered |
| Electronegativity | 1.5 |
| Heat of Vaporization | 737.0 kJ/mol |
| Heat of Fusion | 36 kJ/mol |
| Electrical Conductivity | 8.1 10^6omg-¹cm-¹ |
| Thermal Conductivity | 57.5 Wm-¹K-¹ (at 300 K) |
| Specific Heat Capacity | 0.14 Jg-¹K-¹ (at 300 K) |
| First Ionization Potential | 7.89 |
| Atomic Volume | 10.90 cm³/mol |
| Atomic Radius | 1.49 Å |
| Covalent Radius | 1.34 Å |
| Synthetic | No |