Strontium vs Zirconium
| Property | Sr Strontium | Zr Zirconium |
|---|---|---|
| Atomic number | 38 | 40 |
| Symbol | Sr | Zr |
| Name | Strontium | Zirconium |
| Category | alkaline-earth-metal | transition-metal |
| Standard Atomic Weight | 87.62 u | 91.224 u |
| Period | 5 | 5 |
| Group | 2 | 4 |
| Block | s | s |
| Phase at STP | solid | solid |
| Electron configuration | [Kr]5s2 | [Kr]5s24d2 |
| Oxidation states | [1, 2] | [1, 2, 3, 4] |
| Electronegativity (Pauling) | 0.95 | 1.33 |
| Electron affinity | 0.052 eV | 0.426 eV |
| Density | 2640 kg/m³ | 6520 kg/m³ |
| Melting point | 776.85 °C | 1854.85 °C |
| Boiling point | 1381.85 °C | 4408.85 °C |
| Discovery year | 1792 | 1789 |