Two teams - Russian-American and Japanese ones - lay claim to discovery of the new element.

      The first team announced the synthesis of the element in 2003 after experiments in the Joint Institute for Nuclear Research in Dubna. The second group of researchers from the Japanese Institute of Natural Sciences published its data in 2004, 2005 and 2012.

      The joint commission of the International Union of Pure and Applied Chemistry and as well as Pure and Applied Physics is inclined to the priority of Japanese scientists. The International Union of Pure and Applied Chemistry will take the final decision concerning the discovery and the name at a meeting in January.