Sodium vs Tantalum
| Property | Na Sodium | Ta Tantalum |
|---|---|---|
| Atomic number | 11 | 73 |
| Symbol | Na | Ta |
| Name | Sodium | Tantalum |
| Category | alkali-metal | transition-metal |
| Standard Atomic Weight | 22.989769 u | 180.94788 u |
| Period | 3 | 6 |
| Group | 1 | 5 |
| Block | s | s |
| Phase at STP | solid | solid |
| Electron configuration | [Ne]3s1 | [Xe]6s24f145d3 |
| Oxidation states | [-1, 0, 1] | [-3, -1, 0, 1, 2, 3, 4, 5] |
| Electronegativity (Pauling) | 0.93 | 1.5 |
| Electron affinity | 0.5479 eV | 0.322 eV |
| Density | 970 kg/m³ | 1.640000e+4 kg/m³ |
| Melting point | 97.8 °C | 3016.85 °C |
| Boiling point | 882.85 °C | 5457.85 °C |
| Discovery year | 1807 | 1802 |