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 вісімсот пʼятдесят один protons in its nucleus, and вісімсот пʼятдесят один electrons in its shells.