Atomic Number 116     Mass number of the Isotope Made (289)

This element forms when atoms of element 118 with a mass number of 293 decay. Element 118 was made at the Lawrence Berkeley National Laboratory with their 88-Inch Cyclotron by bombarding a lead-208 target with very high-energy krypton-86 ions.  Element 116 atoms with a mass number of 289 decay into element 114 atoms with a mass number of 285. The discovery of these elements was announced on June 7, 1999.