Ununquadium

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Pb

Uuq

Atomic properties
Atomic number 114
Electron configuration [Rn] 7s2 5f14 6d10 7p2
Miscellaneous
CAS number 54085-16-4
Where appropriate, and unless otherwise stated, data are given for 100 kPa (1 bar) and 298.15 K (25 °C).

Ununquadium (symbol: Uuq) is a chemical element in group 14 of the periodic table. It has attracted interest because of the possibility that 298Uuq might be at the centre of a (relative) "island of stability" among superheavy nuclides[1] and because the chemical properties of ununquadium might resemble those of the noble gases rather than other group 14 elements.[2]

The preparation of ununquadium was claimed in 1999 by the team of Oganessian et al. at Dubna in Russia:[3] these claims, and later results by the same team,[4] are under consideration by the IUPAC/IUPAP Joint Working Party on Discovery of Elements (JWP).[5][6]

References

  1. Nilsson, Sven Gösta; Tsang, Chin Fu; Sobiczewski, Adam; Szymański, Zdzislaw; Wycech, Slawomir; Gustafson, Christer; Lamm, Inger-Lena; Möller, Peter, et al. On the nuclear structure and stability of heavy and superheavy elements. Nucl. Phys. A 1969, 131 (1), 1–66. DOI: 10.1016/0375-9474(69)90809-4.
  2. Pitzer, Kenneth S. Are elements 112, 114, and 118 relatively inert gases?. J. Chem. Phys. 1975, 63, 1032–33. DOI: 10.1063/1.431398.
  3. Oganessian, Yu. Ts. Synthesis of nuclei of the superheavy element 114 in reactions induced by 48Ca. Nature 1999, 400, 242–45. Oganessian, Yu. Ts. Synthesis of superheavy nuclei in the 48Ca + 244Pu reaction. Phys. Rev. Lett. 1999, 83, 3154–57.
  4. Oganessian, Yu. Ts. Synthesis of superheavy nuclei in the 48Ca + 244Pu reaction. Phys. Rev. C 2000, 62, 041604/1–041604/4. Oganessian, Yu. Ts. Synthesis of heavy nuclei in 48Ca + 244Pu interactions. Phys. Atom. Nucl. 2000, 63, 1679–87.
  5. Karol, P. J.; Nakahara, H.; Petley, B. W.; Vogt, E. On the Claims for Discovery of Elements 110, 111, 112, 114, 116, and 118 (IUPAC Technical Report). Pure Appl. Chem. 2003, 75 (10), 1601–11. DOI: 10.1351/pac200375101601.
  6. Barber, Robert C.; Gäggeler, Heinz W.; Karol, Paul J.; Nakahara, Hiromichi; Vardaci, Emanuele; Vogt, Erich Discovery of the element with atomic number 112 (IUPAC Technical Report). Pure Appl. Chem. 2009, 81 (7), 1331–43. DOI: 10.1351/PAC-REP-08-03-05.

Further reading


External links

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