Krypton vs Oganesson
| Property | Kr Krypton | Og Oganesson |
|---|---|---|
| Atomic number | 36 | 118 |
| Symbol | Kr | Og |
| Name | Krypton | Oganesson |
| Category | noble-gas | noble-gas |
| Standard Atomic Weight | 83.798 u | 294 u |
| Period | 4 | 7 |
| Group | 18 | 18 |
| Block | p | p |
| Phase at STP | gas | gas |
| Electron configuration | [Ar]4s23d104p6 | [Rn] 7s2 7p6 5f14 6d10(predicted) |
| Oxidation states | [0, 1, 2] | [-1, 0, 1, 2, 4, 6] |
| Electronegativity (Pauling) | 3 | N/A |
| Electron affinity | -1 eV | 0.056 eV |
| Density | 3.733 kg/m³ | 7000 kg/m³ |
| Melting point | -157.36 °C | -273.15 °C |
| Boiling point | -153.42 °C | -243.15 °C |
| Discovery year | 1898 | 2006 |