Lead vs Meitnerium
| Property | Pb Lead | Mt Meitnerium |
|---|---|---|
| Atomic number | 82 | 109 |
| Symbol | Pb | Mt |
| Name | Lead | Meitnerium |
| Category | post-transition-metal | transition-metal |
| Standard Atomic Weight | 207.2 u | 278 u |
| Period | 6 | 7 |
| Group | 14 | 9 |
| Block | p | s |
| Phase at STP | solid | N/A |
| Electron configuration | [Xe]6s24f145d106p2 | [Rn]7s25f146d7(calculated) |
| Oxidation states | [-4, -2, -1, 0, 1, 2, 3, 4] | [1, 3, 4, 6, 8, 9] |
| Electronegativity (Pauling) | 2.33 | N/A |
| Electron affinity | 0.364 eV | 1.7 eV |
| Density | 1.134200e+4 kg/m³ | 3.740000e+4 kg/m³ |
| Melting point | 327.46 °C | -273.15 °C |
| Boiling point | 1748.85 °C | -273.15 °C |
| Discovery year | 2021 | 1982 |