Octpentunium (Opu)

Octpentunium is the systematic name of the theoretical ที่ 851 element in the periodic table with a symbol of Opu and atomic number of 851. Octpentunium, also known as element 851, has แปด​ร้อย​ห้า​สิบ​เอ็ด protons in its nucleus, and แปด​ร้อย​ห้า​สิบ​เอ็ด electrons in its shells.