Element Ununoctium, Uuo

First synthesis of the element 118, Ununoctium, Uuo, was published in 1999 by Lawrence Berkeley National Laboratory in Calif, but further analysis of this results reveals some fraud in their studies. The first proven synthesis of Ununoctium was carried out at the Flerov Laboratory at the Joint Institute for Nuclear Research in Russia and the Lawrence Livermore National Laboratory in the USA. Only one atom in 2002 and two atoms of Ununoctium-294 in 2005 were synthesized, but results were published only on October 2006 (Yu. Ts. Oganessian, "Synthesis and decay properties of superheavy elements", Pure Appl. Chem., 2006, 78, 889-904), (Yu. Ts. Oganessian et al., "Synthesis of the isotopes of elements 118 and 116 in the ²⁴⁹Cf and ²⁴⁵Cm+⁴⁸Ca fusion reactions", Phys. Rev. C, 2006, 74, 044602). The synthesis of Ununoctinum was verified by the analysis of independently created element 116, Ununhexium, which displays the same decay pattern as a decay products of Ununoctinum.

The name Ununoctium (symbol Uuo) is a temporary IUPAC systematic chemical element name for element 118. Another name used for the element 118 is eka-radon.