Ununtrium

113 ununbiumununtriumununquadium
Tl

Uut

(Uht)
Periodic Table - Extended Periodic Table
General
Name, Symbol, Number ununtrium, Uut, 113
Chemical series presumably poor metals
Group, Period, Block 13, 7, p
Appearance unknown, probably silvery
white or metallic gray
Atomic mass (293) g/mol
Electron configuration perhaps [Rn] 5f14 6d10 7s2 7p1
(guess based on thallium)
Electrons per shell 2, 8, 18, 32, 32, 18, 3
Phase presumably a solid
CAS registry number 54084-70-7
References

Ununtrium (IPA: /ˌjuːˈnʌntriəm/), or eka-thallium, is the temporary name of a synthetic element in the periodic table that has the temporary symbol Uut and has the atomic number 113. It comes from the alpha decay (release of a helium nucleus) of ununpentium. Following periodic trends it is expected to be a soft, silvery highly reactive metal, rather like sodium.

Contents

[edit]

History

On February 1, 2004, the discovery of ununtrium and ununpentium were reported by a team composed of Russian scientists at Dubna (Joint Institute for Nuclear Research), and American scientists at the Lawrence Livermore National Laboratory.

On September 28, 2004, a team of Japanese scientists at RIKEN declared that they succeeded in synthesizing the element.[1][2]

In May 2006, at the Joint Institute for Nuclear Research, the synthesis of this element was confirmed by another method (the chemical identifying on final products of decay of element).

[edit]

Name

Ununtrium is a temporary IUPAC systematic element name. Scientists from Japan proposed for the element the name japonium (symbol Jp) or rikenium (Rk) after RIKEN.[3]

[edit]

See also

[edit]

References

  1. Morita et al, Experiment on the Synthesis of Element 113 in the Reaction 209Bi(70Zn, n)278113, J. Phys. Soc. Jpn., Vol. 73, No.10. Also press release in Japanese
  2. [1]
  3. [2]
[edit]

External links

Retrieved from "http://localhost../../../art/a/u/7.html"



This text comes from Wikipedia the free encyclopedia. Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.2 or any later version published by the Free Software Foundation; with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts. For a complete list of contributors for a given article, visit the corresponding entry on the English Wikipedia and click on "History" . For more details about the license of an image, visit the corresponding entry on the English Wikipedia and click on the picture.