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{{vfd||date=2018/04/06}} {{Elementbox |name=Ust |enname=Unsepttrium |symbol=Ust |number=173 |pagecolor=ffc0c0 |left=Usb |right=Usq或无[1][2] |above=- |below=- |series=g区元素 |group=不適用 |period=10 |atomic mass=未知 |block=g |electron configuration= [Usb] 6g1(推測)[3][4][5] |electrons per shell=2, 8, 18, 32, 50, 33, 18, 8, 4(推測)[4] [5] |oxidation states=未知 |CAS number=55187-84-3 }}

Ust(英语:Unsepttrium,化学符号为Ust)是一种尚未被发现的化学元素,原子序数是173。根据一些学者的推测,它是元素周期表中最后一种元素,也是第10周期唯一的元素[2],但也有学者认为不是[1][6]

特徵

Ust尚未被发现,目前也没有尝试合成的报告。据推测,它是一种g区元素[3]。根据元素周期律,其化学性质有可能与g区元素Ubu相似。然而,也有预测认为ust将表现出与碱金属类似的化学性质,并且甚至比uue更具反应性。[5]

注釋

参考文献

Category:第10周期元素

  1. ^ 1.0 1.1 Walter Greiner and Stefan Schramm, Am. J. Phys. 76, 509 (2008), and references therein.
  2. ^ 2.0 2.1 Fricke, B.; Greiner, W.; Waber, J. T. . Theoretica chimica acta (Springer-Verlag). 1971, 21 (3): 235–260 [28 November 2012]. doi:10.1007/BF01172015.
  3. ^ 3.0 3.1 {{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| last1=Hoffman|first1=Darleane C. |last2=Lee |first2=Diana M. |last3=Pershina |first3=Valeria |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}}
  4. ^ 4.0 4.1 {{cite journal |last1=Fricke |first1=Burkhard |year=1975 |title=Superheavy elements: a prediction of their chemical and physical properties |journal=Recent Impact of Physics on Inorganic Chemistry |volume=21 |pages=89–144 |doi=10.1007/BFb0116498 |url=http://www.researchgate.net/publication/225672062_Superheavy_elements_a_prediction_of_their_chemical_and_physical_properties |accessdate=4 October 2013}}
  5. ^ 5.0 5.1 5.2 {{cite journal |last1=Fricke |first1=Burkhard |year=1977 |title= Dirac-Fock-Slater calculations for the elements Z = 100, fermium, to Z = 173 |journal=Recent Impact of Physics on Inorganic Chemistry |volume=19 |pages=83–192 |doi=10.1016/0092-640X(77)90010-9 |url=http://kobra.bibliothek.uni-kassel.de/bitstream/urn:nbn:de:hebis:34-2008071622807/1/Fricke_Dirac_1977.pdf |accessdate=25 February 2016|bibcode = 1977ADNDT..19...83F }}
  6. ^ {{cite book|last=Emsley|first=John|title=Nature's Building Blocks: An A-Z Guide to the Elements|edition=New|year=2011|publisher=Oxford University Press|location=New York, NY|isbn=978-0-19-960563-7|page=588}}。