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 acht­hundert­ein­und­fünfzig protons in its nucleus, and acht­hundert­ein­und­fünfzig electrons in its shells.