Unbitrium (Ubt)
SuperactinideMasse atomique relative standard
N/DConfiguration électronique
[Og] 5g³ 8s²Point de fusion
N/DPoint d’ébullition
N/DMasse volumique
N/DÉtats d’oxydation
N/DÉlectronégativité (Pauling)
N/DÉnergie d’ionisation (1re)
N/DAnnée de découverte
N/DRayon atomique
N/DUnbitrium is the temporary systematic name for element 123, a hypothetical superheavy element beyond the confirmed periodic table. It has not been synthesized or identified in nature. Chemical discussions of Ubt are therefore predictive and model-dependent. It is expected to belong to the superactinide region of period 8, where relativistic effects and overlapping 5g, 6f, 7d, and 8s orbital energies make simple extrapolation from lighter elements unreliable.
This element has not been synthesized or experimentally confirmed. All listed physicochemical properties are calculated, extrapolated, or model-dependent.
No macroscopic sample of unbitrium exists, and no atom has been confirmed. Its bulk appearance, crystal structure, density, and melting behavior are unknown. Calculations generally treat it as a very heavy metallic element, but this is a prediction rather than an observed property.
Unbitrium has no practical, commercial, medical, or industrial use. If it is ever produced, its use would be limited to nuclear and chemical research, especially studies of superheavy-element stability, decay modes, and the limits of periodic trends. Any chemistry would likely be performed on single atoms or extremely small numbers of atoms, not on weighable material.
No compound of unbitrium has been prepared or observed. No oxidation state has been experimentally assigned. Theoretical work places Ubt among superactinides, where valence behavior may involve closely spaced 5g, 6f, 7d, and 8s levels. Predicted fluorides, oxides, or coordination species are model systems only, and their formulas, stabilities, and bonding cannot be treated as established chemistry.
The safety properties of unbitrium are not experimentally known. Any isotope produced would be radioactive, but isotope-specific half-lives and decay modes remain unconfirmed. In realistic research quantities, the principal hazards would arise from radiation, activated accelerator components, and heavy-ion target materials rather than from chemical toxicity of bulk Ubt, because bulk Ubt is unavailable.
Unbitrium has no confirmed natural occurrence and no known environmental cycle. It has not been detected in minerals, water, air, biological material, meteorites, or cosmic samples. If individual atoms were produced artificially, they would be expected to decay before participating in ordinary environmental transport or geochemical concentration.
Unbitrium has no commodity market, no supply chain, and no economic demand. Production, if achieved, would require specialized nuclear facilities, intense heavy-ion beams, and rare heavy target nuclides, with expected yields at the atom-at-a-time level. The limiting factors would be nuclear reaction probability, target availability, detection sensitivity, and isotope lifetime. It cannot be mined, stockpiled, traded, or recycled as a material.
No extraterrestrial unbitrium has been confirmed. Superheavy nuclei could in principle be formed transiently in extreme neutron-rich nucleosynthesis, but survival depends on nuclear stability that has not been demonstrated for element 123. Any primordial Ubt, if once present with short half-lived isotopes, would have decayed long ago.
- Unbitrium is a temporary IUPAC systematic name, not a discovery name.
- No isotope of element 123 has been confirmed.
- It lies in the predicted superactinide region of period 8.
- Its chemistry is expected to be strongly affected by relativistic orbital effects.
- A future discovery would likely be based on nuclear decay correlations, not bulk isolation.
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Propriétés
Propriétés physiques
N/D
Propriétés chimiques
- Affinité électronique
- 0,4 eV
- Configuration électronique
- [Og] 5g³ 8s²
Propriétés thermodynamiques
N/D
Propriétés nucléaires
- Protons
- 123 Comparer : Protons de tous les éléments →
- Isotopes connus
- 0 Comparer : Isotopes connus de tous les éléments →
- Isotopes stables
- 0 Comparer : Isotopes stables de tous les éléments →
- Présence à l’état naturel
- Non observé
Abondance
N/D
Sécurité
- Radioactif
- Oui
Structure cristalline
N/D
Structure électronique
- Électrons par couche
- 2, 8, 18, 32, 35, 18, 8, 2 Comparer : Électrons par couche de tous les éléments →
Identifiants
- Numéro CAS
- 54576-74-8 Comparer : Numéro CAS de tous les éléments →
Configuration électronique Prédit
——Données de configuration électronique indisponibles pour cet ion.
Modèle atomique
Les isotopes diffèrent par leur nombre de neutrons, leur masse et leur stabilité — pas par la configuration électronique de l’atome neutre.
N/D
Modèle atomique schématique, non à l’échelle.
Empreinte atomique
Spectre d’émission / d’absorption
Distribution isotopique
Aucun isotope stable.
| Nombre de masse | Masse atomique (u) | Abondance naturelle | Demi-vie |
|---|
Phase / État
Données de phase ou d’état indisponibles
N/D
Données de phase ou d’état indisponibles