Octennilium (Oen)

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