In 2010, a joint Russia–US collaboration at Dubna, Moscow Oblast, Russia, claimed to have synthesized six atoms of tennessine (element 117), making it the most recently claimed discovery.
Pada tahun 2010, kolaborasi Rusia–AS di Dubna, Oblast Moskwa, Rusia, mengaku telah mensintesis enam atom ununseptium (unsur 117), membuatnya sebagai pengakuan terkini.