High Quality Content by WIKIPEDIA articles! Copernicium is a synthetic radioactive chemical element with the symbol Cn and atomic number 112. It was first created in 1996 by the Gesellschaft fur Schwerionenforschung (GSI). Copernicium is currently the highest-numbered element to be officially recognised by IUPAC. The most stable isotope discovered to date is 285Cn with a half-life of ?30 s, although evidence exists that 285Cn may have a nuclear isomer with a much longer half-life of 8.9 min. In total, about 75 atoms of copernicium have been detected using various nuclear reactions. Recent experiments suggest that copernicium behaves as a typical member of group 12, demonstrating properties consistent with a volatile metal.

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