Chromium vs Polonium
| Property | Cr Chromium | Po Polonium |
|---|---|---|
| Atomic number | 24 | 84 |
| Symbol | Cr | Po |
| Name | Chromium | Polonium |
| Category | transition-metal | metalloid |
| Standard Atomic Weight | 51.9961 u | 209 u |
| Period | 4 | 6 |
| Group | 6 | 16 |
| Block | s | p |
| Phase at STP | solid | solid |
| Electron configuration | [Ar]3d54s1 | [Xe]6s24f145d106p4 |
| Oxidation states | [-4, -2, -1, 0, 1, 2, 3, 4, 5, 6] | [-2, 2, 4, 5, 6] |
| Electronegativity (Pauling) | 1.66 | 2 |
| Electron affinity | 0.675 eV | 1.9 eV |
| Density | 7150 kg/m³ | 9320 kg/m³ |
| Melting point | 1906.85 °C | 253.85 °C |
| Boiling point | 2670.85 °C | 961.85 °C |
| Discovery year | 1797 | 1898 |