Hydrogen vs Tantalum
| Property | H Hydrogen | Ta Tantalum |
|---|---|---|
| Atomic number | 1 | 73 |
| Symbol | H | Ta |
| Name | Hydrogen | Tantalum |
| Category | nonmetal | transition-metal |
| Standard Atomic Weight | 1.007975 u | 180.94788 u |
| Period | 1 | 6 |
| Group | 1 | 5 |
| Block | s | s |
| Phase at STP | gas | solid |
| Electron configuration | 1s1 | [Xe]6s24f145d3 |
| Oxidation states | [-1, 1] | [-3, -1, 0, 1, 2, 3, 4, 5] |
| Electronegativity (Pauling) | 2.2 | 1.5 |
| Electron affinity | 0.75419 eV | 0.322 eV |
| Density | 0.08988 kg/m³ | 1.640000e+4 kg/m³ |
| Melting point | -259.34 °C | 3016.85 °C |
| Boiling point | -252.87 °C | 5457.85 °C |
| Discovery year | 1766 | 1802 |