Ununennium vs Unbinilium
Side-by-side comparison of Ununennium (Uue, element 119) and Unbinilium (Ubn, element 120) by atomic structure and physical properties.
Predicted
Ununennium (Uue) Near-real
This element is actively being synthesized in laboratories (Russia, Japan, USA). Its existence is theoretically confirmed, and discovery is expected in the coming years.
Unbinilium (Ubn) Near-real
This element is actively being synthesized in laboratories (Russia, Japan, USA). Its existence is theoretically confirmed, and discovery is expected in the coming years.
This element has not been synthesized or experimentally confirmed. All listed physicochemical properties are calculated, extrapolated, or model-dependent.
| Property | Uue Ununennium Predicted | Ubn Unbinilium Predicted |
|---|---|---|
| Atomic number | 119 | 120 |
| Symbol | Uue | Ubn |
| Name | Ununennium | Unbinilium |
| Category | Superactinide | Superactinide |
| Standard Atomic Weight | Not established | Not established |
| Period | 8 | 8 |
| Group | 1 | 2 |
| Block | s | s |
| Phase at STP | Not established | Not established |
| Electron configuration | [Og]8s1 | [Og]8s2 |
| Oxidation states | ["+1","+3"] | ["+2","+4"] |
| Electronegativity (Pauling) | 0.86 | Not established |
| Electron affinity | 0.25 eV | 0.02 eV |
| Density | 3 kg/m³ | Not established |
| Melting point | Not established | Not established |
| Boiling point | Not established | Not established |
| Discovery year | Not established | Not established |
Key Differences
| Property | Uue Ununennium | Ubn Unbinilium |
|---|---|---|
| Electron affinity | 0.25 eV ↑ higher | 0.02 eV ↓ lower |
| Group | 1 | 2 |
| Electron configuration | [Og]8s1 | [Og]8s2 |
What Can Be Compared?
Elements beyond oganesson (118) have not been synthesized, so most physicochemical properties cannot be compared experimentally. For them, only identity data is available: systematic IUPAC name, symbol, atomic number, and predicted periodic-table placement (period, group, block, electron configuration).