Actinium vs Livermorium
| Property | Ac Actinium | Lv Livermorium |
|---|---|---|
| Atomic number | 89 | 116 |
| Symbol | Ac | Lv |
| Name | Actinium | Livermorium |
| Category | actinide | post-transition-metal |
| Standard Atomic Weight | 227 u | 293 u |
| Period | 7 | 7 |
| Group | N/A | 16 |
| Block | s | p |
| Phase at STP | solid | solid |
| Electron configuration | [Rn]7s26d1 | [Rn] 7s2 7p4 5f14 6d10(predicted) |
| Oxidation states | [3] | [-2, 2, 4] |
| Electronegativity (Pauling) | 1.1 | N/A |
| Electron affinity | 0.35 eV | 0.7 eV |
| Density | 1.007000e+4 kg/m³ | 1.290000e+4 kg/m³ |
| Melting point | 1050.85 °C | 506.85 °C |
| Boiling point | 3197.85 °C | 861.85 °C |
| Discovery year | 1899 | 2000 |