Argon vs Oganesson
| Property | Ar Argon | Og Oganesson |
|---|---|---|
| Atomic number | 18 | 118 |
| Symbol | Ar | Og |
| Name | Argon | Oganesson |
| Category | noble-gas | noble-gas |
| Standard Atomic Weight | 39.948 u | 294 u |
| Period | 3 | 7 |
| Group | 18 | 18 |
| Block | p | p |
| Phase at STP | gas | gas |
| Electron configuration | [Ne]3s23p6 | [Rn] 7s2 7p6 5f14 6d10(predicted) |
| Oxidation states | [0] | [-1, 0, 1, 2, 4, 6] |
| Electronegativity (Pauling) | N/A | N/A |
| Electron affinity | -1 eV | 0.056 eV |
| Density | 1.7837 kg/m³ | 7000 kg/m³ |
| Melting point | -189.35 °C | -273.15 °C |
| Boiling point | -185.85 °C | -243.15 °C |
| Discovery year | 1894 | 2006 |