Polonium vs Rutherfordium
| Property | Po Polonium | Rf Rutherfordium |
|---|---|---|
| Atomic number | 84 | 104 |
| Symbol | Po | Rf |
| Name | Polonium | Rutherfordium |
| Category | metalloid | transition-metal |
| Standard Atomic Weight | 209 u | 263 u |
| Period | 6 | 7 |
| Group | 16 | 4 |
| Block | p | s |
| Phase at STP | solid | solid |
| Electron configuration | [Xe]6s24f145d106p4 | [Rn]7s25f146d2 |
| Oxidation states | [-2, 2, 4, 5, 6] | [3, 4] |
| Electronegativity (Pauling) | 2 | N/A |
| Electron affinity | 1.9 eV | 0.65 eV |
| Density | 9320 kg/m³ | 2.330000e+4 kg/m³ |
| Melting point | 253.85 °C | 2126.85 °C |
| Boiling point | 961.85 °C | 5526.85 °C |
| Discovery year | 1898 | 1964 |