Indium vs Tantalum
| Property | In Indium | Ta Tantalum |
|---|---|---|
| Atomic number | 49 | 73 |
| Symbol | In | Ta |
| Name | Indium | Tantalum |
| Category | post-transition-metal | transition-metal |
| Standard Atomic Weight | 114.818 u | 180.94788 u |
| Period | 5 | 6 |
| Group | 13 | 5 |
| Block | p | s |
| Phase at STP | solid | solid |
| Electron configuration | [Kr]5s24d105p1 | [Xe]6s24f145d3 |
| Oxidation states | [-5, -2, -1, 0, 1, 2, 3] | [-3, -1, 0, 1, 2, 3, 4, 5] |
| Electronegativity (Pauling) | 1.78 | 1.5 |
| Electron affinity | 0.3 eV | 0.322 eV |
| Density | 7310 kg/m³ | 1.640000e+4 kg/m³ |
| Melting point | 156.6 °C | 3016.85 °C |
| Boiling point | 2071.85 °C | 5457.85 °C |
| Discovery year | 1863 | 1802 |