Octennilium (Oen)

Octennilium is the systematic name of the theoretical ٨٩٠. element in the periodic table with a symbol of Oen and atomic number of 890. Octennilium, also known as element 890, has ثمانية مائة وتسعون protons in its nucleus, and ثمانية مائة وتسعون electrons in its shells.