Octennilium (Oen)

Octennilium is the systematic name of the theoretical ที่ 890 element in the periodic table with a symbol of Oen and atomic number of 890. Octennilium, also known as element 890, has แปด​ร้อย​เก้า​สิบ protons in its nucleus, and แปด​ร้อย​เก้า​สิบ electrons in its shells.