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