Octennunium (Oeu)

Octennunium is the systematic name of the theoretical ที่ 891 element in the periodic table with a symbol of Oeu and atomic number of 891. Octennunium, also known as element 891, has แปด​ร้อย​เก้า​สิบ​เอ็ด protons in its nucleus, and แปด​ร้อย​เก้า​สิบ​เอ็ด electrons in its shells.