Unbiunium (Ubu)
Superactinideप्रमाणित अणुभार
उपलब्ध नाहीइलेक्ट्रॉन संरूपण
[Og] 5g¹ 8s²द्रवणांक
उपलब्ध नाहीउत्कलनांक
उपलब्ध नाहीघनता
उपलब्ध नाहीऑक्सिडीकरण अवस्था
उपलब्ध नाहीविद्युतऋणता (पॉलिंग)
उपलब्ध नाहीआयनीकरण ऊर्जा (पहिली)
उपलब्ध नाहीशोधाचे वर्ष
उपलब्ध नाहीअणुत्रिज्या
उपलब्ध नाहीUnbiunium is the temporary systematic name for element 121, symbol Ubu. It has not been confirmed by synthesis, and all chemical data are theoretical. In extended periodic-table models it is placed just beyond elements 119 and 120, often as an early superactinide or eka-actinium-like element. Relativistic electronic effects are expected to shape its valence chemistry, probably making the +3 state important, but no atom has been chemically studied.
This element has not been synthesized or experimentally confirmed. All listed physicochemical properties are calculated, extrapolated, or model-dependent.
No macroscopic sample of unbiunium exists, and its appearance has not been observed. Any description of color, luster, density, melting point, or crystal structure is only a theoretical prediction for a substance not yet made in bulk.
Unbiunium has no confirmed practical or commercial use. If produced, it would be made atom by atom for nuclear-physics research, mainly to test models of superheavy nuclei, shell stabilization, and decay chains beyond the known elements. Any chemical use is precluded by the absence of isolable quantities and by the expected short half-lives of accessible isotopes.
No compound of unbiunium has been prepared. Calculations generally treat it as a very heavy electropositive element whose chemistry may resemble an expanded version of actinium-group behavior, with Ubu³⁺ likely to be a significant ionic form. Hypothetical compounds such as unbiunium trifluoride (UbuF₃), unbiunium trichloride (UbuCl₃), or unbiunium oxide (Ubu₂O₃) are model species, not known substances. Lower oxidation states may be affected by relativistic stabilization of outer p orbitals, but their stability is uncertain.
There are no measured toxicological or radiological data for unbiunium. Any isotope that might be synthesized would be a superheavy radionuclide, with hazards determined by its isotope-specific half-life and decay modes. Realistic handling would be in shielded accelerator facilities at atom-at-a-time quantities, so radiation from the product atoms would be a research-control issue rather than an industrial exposure scenario.
Unbiunium has no confirmed natural occurrence and no observed environmental cycle. If individual atoms were formed artificially and released, their behavior would be dominated by radioactive decay long before ordinary geochemical transport could be characterized. Environmental properties such as solubility, sorption, and bioavailability are therefore unknown and only inferable from theoretical chemistry.
Unbiunium has no commodity market, no commercial supply chain, and no recycling stream. Production, if achieved, would require a heavy-ion accelerator, rare target material, and highly sensitive decay detection, with yields expected to be at the level of individual atoms. Costs would be those of fundamental nuclear research rather than material production. Substitution and demand are not meaningful because no technological application has been established.
No isotope of unbiunium is known in nature or in extraterrestrial material. Superheavy nuclei near this region may be discussed in models of rapid neutron-capture nucleosynthesis and the island of stability, but confirmed long-lived nuclides of element 121 are not known. Any primordial abundance, if it ever existed, is expected to be negligible unless unexpectedly long-lived isotopes exist.
- Unbiunium is a temporary systematic IUPAC name, not a discovery name.
- The temporary symbol Ubu would change if the element were officially named.
- No isotope of element 121 has a measured half-life.
- Predicted chemistry depends strongly on relativistic electronic structure.
- Element 121 is often discussed as an early superactinide.
- No confirmed natural atom of unbiunium has been reported.
प्रतिमा
गुणधर्म
भौतिक
उपलब्ध नाही
रासायनिक
- इलेक्ट्रॉन आसक्ती
- 0.5 eV
- इलेक्ट्रॉन संरूपण
- [Og] 5g¹ 8s²
उष्मागतिक
उपलब्ध नाही
केंद्रकीय
- प्रोटॉन
- 121 सर्व घटकांच्या प्रोटॉन ची तुलना करा →
- ज्ञात समस्थानिके
- 0 सर्व घटकांच्या ज्ञात समस्थानिके ची तुलना करा →
- स्थिर समस्थानिके
- 0 सर्व घटकांच्या स्थिर समस्थानिके ची तुलना करा →
- नैसर्गिक आढळ
- आढळलेले नाही
विपुलता
उपलब्ध नाही
सुरक्षितता
- किरणोत्सारी
- होय
स्फटिक संरचना
उपलब्ध नाही
इलेक्ट्रॉन संरचना
- प्रत्येक कवचातील इलेक्ट्रॉन
- 2, 8, 18, 32, 33, 18, 8, 2 सर्व घटकांच्या प्रत्येक कवचातील इलेक्ट्रॉन ची तुलना करा →
ओळखचिन्हे
- CAS क्रमांक
- 54899-56-8 सर्व घटकांच्या CAS क्रमांक ची तुलना करा →
इलेक्ट्रॉन संरूपण भाकीत केलेले
——या आयनासाठी इलेक्ट्रॉन संरूपणाची माहिती उपलब्ध नाही.
अणुप्रतिमान
समस्थानिकांमुळे न्यूट्रॉन संख्या, वस्तुमान आणि स्थैर्य बदलते — विद्युतदृष्ट्या उदासीन अणूचे इलेक्ट्रॉन संरूपण बदलत नाही.
उपलब्ध नाही
योजनात्मक अणुप्रतिमान, प्रमाणानुसार नाही.
अणूची विशिष्ट ओळख
उत्सर्जन / शोषण वर्णपट
समस्थानिक वितरण
स्थिर समस्थानिके नाहीत.
| वस्तुमानांक | अणुवस्तुमान (u) | नैसर्गिक विपुलता | अर्धायुष्य |
|---|
अवस्था / स्थिती
अवस्थेविषयी माहिती उपलब्ध नाही
उपलब्ध नाही
अवस्थेविषयी माहिती उपलब्ध नाही