Octpentunium (Opu)

Octpentunium is the systematic name of the theoretical 851. element in the periodic table with a symbol of Opu and atomic number of 851. Octpentunium, also known as element 851, has aštuoni šimtai penkiasdešimt vienas protons in its nucleus, and aštuoni šimtai penkiasdešimt vienas electrons in its shells.