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 რვაას­ორმოცი protons in its nucleus, and რვაას­ორმოცი electrons in its shells.