查看“︁Ubs”︁的源代码

{{noteTA
|G1=Physics
|G2=Chemistry
|G3=核能
}}
{{不是|瑞銀集團}}
{{Elementbox
|name=Ubs
|enname=Unbiseptium
|number=127
|symbol=Ubs
|left=[[Ubh]]
|right=(Ubo)
|above=-
|below=-<ref>原子序的上限為173</ref>
|series=未知
|predicted series=超錒系元素
|series comment=可能為[[超錒系元素]]
|group=不適用
|period=8
|block=g
|series color=
|phase color=
|appearance=
|image name=
|image size=
|image name comment=
|image name 2=
|image size 2=
|image name 2 comment=
|atomic mass=未知
|atomic mass 2=
|atomic mass comment=
|electron configuration= &#91;[[Og]]&#93; 5g<sup>3</sup> 6f<sup>2</sup> 8s<sup>2</sup> 8p<sup>2</sup><br />（預測<ref name=Haire>{{cite book| title = The Chemistry of the Actinide and Transactinide Elements| editor1-last = Morss|editor2-first = Norman M.| editor2-last = Edelstein| editor3-last = Fuger|editor3-first = Jean| last = Haire|first = Richard G.| chapter = Transactinides and the future elements| publisher = [[Springer Science+Business Media]]| year = 2006| isbn = 1-4020-3555-1| location = Dordrecht, The Netherlands| edition = 3rd| ref = CITEREFHaire2006}}</ref>）
|electrons per shell=2, 8, 18, 32, 35, 20, 8, 4<br />（預測）
|physical properties=未知
|color=
|phase=
|phase comment=
|density gplstp=
|density gpcm3nrt=
|density gpcm3nrt 2=
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|density gpcm3mp=
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|heat fusion=
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|vapor pressure 100=
|vapor pressure 1 k=
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|vapor pressure 100 k=
|vapor pressure comment=
|crystal structure=
|atomic properties=未知
|oxidation states=根據5g元素預測<br/>可能具有+6氧化態<ref name="5gchem">{{cite journal|last1=Dongon|first1=J.P.|last2=Pyykkö|first2=P.|date=2017|title=Chemistry of the 5g elements. Relativistic calculations on hexafluorides|journal=Angewandte Chemie International Edition|volume=56|issue=34|pages=10132–10134|doi=10.1002/anie.201701609|pmid=28444891|s2cid=205400592|url=https://hal-cea.archives-ouvertes.fr/cea-01515489/document|access-date=2023-09-29|archive-date=2023-04-17|archive-url=https://web.archive.org/web/20230417124641/https://hal-cea.archives-ouvertes.fr/cea-01515489/document|dead-url=no}}</ref>
|oxidation states comment=
|electronegativity=
|number of ionization energies=
|1st ionization energy=
|2nd ionization energy=
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|atomic radius=
|atomic radius calculated=
|covalent radius=
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|magnetic ordering=
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|electrical resistivity at 20=
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|thermal expansion at 25=
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|isotopes comment=
}}
'''Unbiseptium'''（[[化學符號]]為'''Ubs'''）是一種尚未被發現的[[化學元素]]，[[原子序數]]是127。直到这个元素被发现、确认并确定了永久名称之前，''Unbiseptium''和''Ubs''分别为这个元素的暫定[[IUPAC元素系统命名法|系统命名和化学符号]]。在[[扩展元素周期表]]中，Ubs位於[[第8周期元素|第8週期]]，预测是屬於[[g區元素|g區]]的[[超锕系元素]]。它是緊接著[[Ubh]]之後的元素，而Ubh預計會是[[穩定島]]上最穩定的元素。<ref name="emsley"/>

Ubs迄今為止仍未被成功合成出來，[[德國]][[亥姆霍茲重離子研究中心]]曾在1978年嘗試合成該元素，但並未成功，目前世界各國也尚無嘗試合成Ubs的實驗計畫。

==命名==
{{see|IUPAC元素系統命名法}}

該元素的全稱'''unbiseptium'''是運用系統命名法命名的[[佔位符]]，一直沿用至確認發現了為止。[[鉲]]以後的[[超鈾元素]]全都是人工合成的，其最終一般以科學家或有關實驗室命名。

==Ubs的合成==

位於[[德國]][[達姆施塔特]]的UNILAC加速器於1978年曾嘗試過一次[[人工合成元素|合成]]Ubs，但並未成功。研究人員用[[氙]]離子射向自然產生的[[鉭]]目標，反應的公式為：<ref name="emsley">{{cite book|last=Emsley|first=John|title=Nature's Building Blocks: An A-Z Guide to the Elements|url=https://archive.org/details/naturesbuildingb0000emsl_b1k4|edition=New|year=2011|publisher=Oxford University Press|location=New York, NY|isbn=978-0-19-960563-7|page=[https://archive.org/details/naturesbuildingb0000emsl_b1k4/page/593 593]}}</ref>

:<math>\,^{nat}_{73}\mathrm{Ta} +  \,^{136}_{54}\mathrm{Xe} \to \,^{316, 317}\mathrm{Ubs} ^{*} \to</math> 無原子

===能產生Z=127複核的目標、發射體組合===

下表列出各種可用以產生原子序為127的目標、發射體組合。

{|class="wikitable" style="text-align:center"
|-
! 目標 !! 發射體 !! CN !! 結果
|-
!<sup>180m</sup>Ta
|<sup>136</sup>Xe||<sup>316</sup>Ubs||{{no|至今失敗}}
|-
!<sup>181</sup>Ta
|<sup>136</sup>Xe||<sup>317</sup>Ubs||{{no|至今失敗}}
|-
|}

==參考資料==

{{reflist}}

==參見==

*[[Ubh]]–[[Ubo]]
*[[IUPAC元素系統命名法]]
*[[第8週期元素]]


{{擴展元素週期表 | model=nefedov|number=173|no mark=yes}}

[[Category:化学元素|8]]
[[Category:第8周期元素]]
[[Category:假想化学元素|127]]