Octquadnilium (Oqn)

Octquadnilium is the systematic name of the theoretical 840. element in the periodic table with a symbol of Oqn and atomic number of 840. Octquadnilium, also known as element 840, has aštuoni šimtai keturiasdešimt protons in its nucleus, and aštuoni šimtai keturiasdešimt electrons in its shells.