Discovery of 4 New Elements
Jan 11, 2016
IUPAC, the The International Union of Pure and Applied Chemistry of which EuChemS is a member, has recognised the discovery of Elements with atomic numbers 113, 115, 117 and 118, thus completing the 7th period of the periodic table of elements.
So let´s meet the new elements:
Element 113 (temporary working name and symbol: ununtrium, Uut
The RIKEN collaboration team in Japan have fulfilled the criteria for element Z=113 and will be invited to propose a permanent name and symbol.
Elements 115, 117 and 118 (temporary working names and symbols: ununpentium, Uup; ununseptium, Uus; and ununoctium, Uuo)
The collaboration between the Joint Institute for Nuclear Research in Dubna, Russia; Lawrence Livermore National Laboratory, California, USA; and Oak Ridge National Laboratory, Oak Ridge, Tennessee, USA have fulfilled the criteria for element Z=115, 117 and will be invited to propose permanent names and symbols.
The collaboration between the Joint Institute for Nuclear Research in Dubna, Russia and Lawrence Livermore National Laboratory, California, USA have fulfilled the criteria for element Z=118 and will be invited to propose a permanent name and symbol.
How will these new elements be finally named?
The proposed names and symbols will be checked by the Inorganic Chemistry Division of IUPAC for consistency, translatability into other languages, possible prior historic use for other cases, etc. New elements can be named after a mythological concept, a mineral, a place or country, a property or a scientist (see: W.H. Koppenol, PAC, 74 (2002) 787-791). After Divisional acceptance, the names and two-letter symbols will be presented for public review for 5 months, before the highest body of IUPAC, the Council, will make a final decision on the names of these new chemical elements and their two-letter symbols and their introduction into the PeriodicTable of the Elements.
More info can be found at www.iupac.org.