Promethium vs Moscovium
| Property | Pm Promethium | Mc Moscovium |
|---|---|---|
| Atomic number | 61 | 115 |
| Symbol | Pm | Mc |
| Name | Promethium | Moscovium |
| Category | lanthanide | post-transition-metal |
| Standard Atomic Weight | 145 u | 289 u |
| Period | 6 | 7 |
| Group | N/A | 15 |
| Block | s | p |
| Phase at STP | solid | solid |
| Electron configuration | [Xe]6s24f5 | [Rn] 7s2 7p3 5f14 6d10(predicted) |
| Oxidation states | [2, 3] | [1, 3] |
| Electronegativity (Pauling) | N/A | N/A |
| Electron affinity | 0.129 eV | 0.3 eV |
| Density | 7260 kg/m³ | 1.350000e+4 kg/m³ |
| Melting point | 1041.85 °C | 396.85 °C |
| Boiling point | 2999.85 °C | 1126.85 °C |
| Discovery year | 1902 | 2004 |