has quality atom radioactive quality oganesson atom Oganesson is a synthetic chemical element with the symbol Og and atomic number 118. It was first synthesized in 2002 at the Joint Institute for Nuclear Research (JINR) in Dubna, near Moscow, Russia, by a joint team of Russian and American scientists. In December 2015, it was recognized as one of four new elements by the Joint Working Party of the international scientific bodies IUPAC and IUPAP. It was formally named on 28 November 2016 oganessio Og oganesson oganesson Oganesson https://en.wikipedia.org/wiki/Oganesson 气奥 oganessio