Strontium vs Tantalum
| Property | Sr Strontium | Ta Tantalum |
|---|---|---|
| Atomic number | 38 | 73 |
| Symbol | Sr | Ta |
| Name | Strontium | Tantalum |
| Category | alkaline-earth-metal | transition-metal |
| Standard Atomic Weight | 87.62 u | 180.94788 u |
| Period | 5 | 6 |
| Group | 2 | 5 |
| Block | s | s |
| Phase at STP | solid | solid |
| Electron configuration | [Kr]5s2 | [Xe]6s24f145d3 |
| Oxidation states | [1, 2] | [-3, -1, 0, 1, 2, 3, 4, 5] |
| Electronegativity (Pauling) | 0.95 | 1.5 |
| Electron affinity | 0.052 eV | 0.322 eV |
| Density | 2640 kg/m³ | 1.640000e+4 kg/m³ |
| Melting point | 776.85 °C | 3016.85 °C |
| Boiling point | 1381.85 °C | 5457.85 °C |
| Discovery year | 1792 | 1802 |