Meitnerium vs Oganesson
| Property | Mt Meitnerium | Og Oganesson |
|---|---|---|
| Atomic number | 109 | 118 |
| Symbol | Mt | Og |
| Name | Meitnerium | Oganesson |
| Category | transition-metal | noble-gas |
| Standard Atomic Weight | 278 u | 294 u |
| Period | 7 | 7 |
| Group | 9 | 18 |
| Block | s | p |
| Phase at STP | N/A | gas |
| Electron configuration | [Rn]7s25f146d7(calculated) | [Rn] 7s2 7p6 5f14 6d10(predicted) |
| Oxidation states | [1, 3, 4, 6, 8, 9] | [-1, 0, 1, 2, 4, 6] |
| Electronegativity (Pauling) | N/A | N/A |
| Electron affinity | 1.7 eV | 0.056 eV |
| Density | 3.740000e+4 kg/m³ | 7000 kg/m³ |
| Melting point | -273.15 °C | -273.15 °C |
| Boiling point | -273.15 °C | -243.15 °C |
| Discovery year | 1982 | 2006 |