Template:Infobox ununoctium

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Rn

Uuo

(Uho)
Appearance
Unknown
General
Name, symbol, number ununoctium, Uuo, 118
Element category Unknown
Group, period, block 187, p
Standard atomic weight (294)g·mol−1
Electron configuration [Rn] 5f14 6d10 7s2 7p6[1]
Electrons per shell 2, 8, 18, 32, 32, 18, 8[1] (Image)
Physical properties
Phase Unknown
Density (near r.t.) (predicted) 13.65[2] g·cm−3
Boiling point (extrapolated) 320–380[1] K, 50–110 °C, 120–220 °F
Critical point (extrapolated) 439[3] K, 6.8[3] MPa
Heat of fusion (extrapolated) 23.5[3] kJ·mol−1
Heat of vaporization (extrapolated) 19.4[3] kJ·mol−1
Atomic properties
Oxidation states 0[4], +2[5], +4[5]
Ionization energies 1st: (calc.) 820–1130[1] kJ·mol−1
2nd: (extrapolated) 1450[6] kJ·mol−1
Atomic radius (predicted) 152[2] pm
Covalent radius (extrapolated) 230[6] pm
Miscellaneous
Crystal structure Unknown
CAS registry number 54144-19-3[7]
Most stable isotopes
Main article: Isotopes of ununoctium
iso N.A. half-life DM DE (MeV) DP
294Uuo [8] syn ~0.89 ms α 11.65 ± 0.06 290Uuh

References

  1. 1.0 1.1 1.2 1.3 Clinton S. Nash (2005). "Atomic and Molecular Properties of Elements 112, 114, and 118". J. Phys. Chem. A 109 (15): 3493–3500. http://pubs.acs.org/cgi-bin/abstract.cgi/jpcafh/2005/109/i15/abs/jp050736o.html. Retrieved 2008-01-18. 
  2. 2.0 2.1 "Moskowium". Apsidium. http://www.apsidium.com/elements/118.htm. Retrieved 2008-01-18. 
  3. 3.0 3.1 3.2 3.3 R. Eichler, B. Eichler, Thermochemical Properties of the Elements Rn, 112, 114, and 118, Paul Scherrer Institut, http://lch.web.psi.ch/pdf/anrep03/06.pdf, retrieved 2008-01-18 
  4. "Ununoctium: Binary Compounds". WebElements Periodic Table. http://www.webelements.com/webelements/elements/text/Uuo/comp.html. Retrieved 2008-01-18. 
  5. 5.0 5.1 Uzi Kaldor, Stephen Wilson (2003). Theoretical Chemistry and Physics of Heavy and Superheavy Elements. Springer. pp. 105. ISBN 140201371X. http://books.google.com/books?id=0xcAM5BzS-wC&printsec=frontcover&dq=element+118+properties#PPA105,M1. Retrieved 2008-01-18. 
  6. 6.0 6.1 Glenn Theodore Seaborg (1994). Modern Alchemy. World Scientific. p. 172. ISBN 9810214405. http://books.google.com/books?id=e53sNAOXrdMC&printsec=frontcover#PPA172,M1. Retrieved 2008-01-18. 
  7. "Ununoctium". WebElements Periodic Table. http://www.webelements.com/webelements/elements/text/Uuo/key.html. Retrieved 2007-12-09. 
  8. Oganessian, Yu. Ts.; Utyonkov, V.K.; Lobanov, Yu.V.; Abdullin, F.Sh.; Polyakov, A.N.; Sagaidak, R.N.; Shirokovsky, I.V.; Tsyganov, Yu.S.; Voinov, Yu.S.; Gulbekian, G.G.; Bogomolov, S.L.; B. N. Gikal, A. N. Mezentsev, S. Iliev; Subbotin, V.G.; Sukhov, A.M.; Subotic, K; Zagrebaev, V.I.; Vostokin, G.K.; Itkis, M. G.; Moody, K.J; Patin, J.B.; Shaughnessy, D.A.; Stoyer, M.A.; Stoyer, N.J.; Wilk, P.A.; Kenneally, J.M.; Landrum, J.H.; Wild, J.H.; and Lougheed, R.W. (2006-10-09). "Synthesis of the isotopes of elements 118 and 116 in the 249Cf and 245Cm+48Ca fusion reactions". Physical Review C 74 (4): 044602. doi:10.1103/PhysRevC.74.044602. http://link.aps.org/abstract/PRC/v74/e044602. Retrieved 2008-01-18. 
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