Unbihexium (Ubh)
SuperactinidePeso atômico padrão
N/DConfiguração eletrônica
[Og] 5g⁶ 8s²Ponto de fusão
N/DPonto de ebulição
N/DDensidade
N/DEstados de oxidação
N/DEletronegatividade (Pauling)
N/DEnergia de ionização (1ª)
N/DAno da descoberta
N/DRaio atômico
N/DUnbihexium is the temporary systematic name for the undiscovered element with atomic number 126. It lies in the predicted superheavy region beyond the known periodic table. No isotope has been confirmed, and all chemical and physical properties are theoretical. Nuclear models have treated Z=126 as a possible shell-related number, but predicted stability depends strongly on neutron number and on the model used.
This element has not been synthesized or experimentally confirmed. All listed physicochemical properties are calculated, extrapolated, or model-dependent.
No macroscopic sample of unbihexium exists, and no atoms have been confirmed. Its color, density, melting point, crystal structure, and other bulk properties are unknown. Any description of its appearance would be a prediction only.
Unbihexium has no confirmed practical, commercial, medical, or industrial use. If atoms were produced, they would be used only in nuclear-physics research, chiefly to test models of superheavy nuclei, shell effects, and decay modes. Chemical study would require atom-at-a-time methods, and even that depends on isotopes living long enough to be transported and detected.
No compound of unbihexium has been synthesized or observed. Its chemistry is expected to be strongly affected by relativistic electron behavior and by the placement of element 126 among the predicted superactinides or g-block elements. Calculations may examine possible oxides, halides, or high oxidation states as model systems, but no oxidation state, bonding pattern, or formula has experimental confirmation.
The safety properties of unbihexium are not experimentally known. Any isotope would be radioactive, but isotope-specific half-lives and decay modes have not been measured because no isotope is confirmed. In a laboratory synthesis attempt, the practical hazards would come mainly from accelerator operations, radioactive targets, activation products, and any produced atoms as radiological materials.
Unbihexium has no confirmed natural occurrence and no known environmental cycle. If produced artificially, it would be made in extremely small numbers of atoms and would decay rather than persist as a chemical contaminant. Its mobility, speciation, and ecological behavior are therefore unknown and cannot be inferred from direct observation.
Unbihexium has no commodity market, no industrial demand, and no supply chain. Production, if achieved, would require specialized heavy-ion accelerator experiments using rare target and projectile combinations, with expected yields at the atom-at-a-time level. The limiting factors are nuclear reaction probability, target availability, detector sensitivity, and the lifetime of the product nuclei, not conventional mining or refining economics.
No unbihexium has been detected in nature, meteorites, stellar spectra, or cosmic rays. Very heavy nuclei near this region might be formed fleetingly in extreme neutron-rich events, but survival to the present would require unusually long-lived isotopes that are not known. Its cosmic abundance, if any, is therefore unconfirmed and likely extremely low.
- Unbihexium is an IUPAC systematic temporary name, not a discovery name.
- No isotope of element 126 has been confirmed experimentally.
- Z=126 has been discussed as a possible proton shell closure in some nuclear models.
- All proposed chemical behavior for unbihexium is theoretical.
- Any future study would probably begin with single-atom nuclear detection, not bulk chemistry.
Imagens
Propriedades
Física
N/D
Química
- Afinidade eletrônica
- 0,5 eV
- Configuração eletrônica
- [Og] 5g⁶ 8s²
Termodinâmica
N/D
Nuclear
- Prótons
- 126 Comparar Prótons de todos os elementos →
- Isótopos conhecidos
- 0 Comparar Isótopos conhecidos de todos os elementos →
- Isótopos estáveis
- 0 Comparar Isótopos estáveis de todos os elementos →
- Ocorrência natural
- Não observado
Abundância
N/D
Segurança
- Radioativo
- Sim
Estrutura cristalina
N/D
Estrutura eletrônica
- Elétrons por camada
- 2, 8, 18, 32, 38, 18, 8, 2 Comparar Elétrons por camada de todos os elementos →
Identificadores
- Número CAS
- 54576-77-1 Comparar Número CAS de todos os elementos →
Configuração eletrônica Previsto
——Dados de configuração eletrônica indisponíveis para este íon.
Modelo atômico
Os isótopos alteram o número de nêutrons, a massa e a estabilidade — não a configuração eletrônica de um átomo neutro.
N/D
Modelo atômico esquemático, sem escala.
Assinatura atômica
Espectro de emissão / absorção
Distribuição isotópica
Sem isótopos estáveis.
| Número de massa | Massa atômica (u) | Abundância natural | Meia-vida |
|---|
Fase / Estado
Dados de fase/estado indisponíveis
N/D
Dados de fase/estado indisponíveis