Octquadnilium (Oqn)

Octquadnilium is the systematic name of the theoretical ٨٤٠. element in the periodic table with a symbol of Oqn and atomic number of 840. Octquadnilium, also known as element 840, has ثمانية مائة وأربعون protons in its nucleus, and ثمانية مائة وأربعون electrons in its shells.