Octpentoctium (Opo)

Octpentoctium is the systematic name of the theoretical 858. element in the periodic table with a symbol of Opo and atomic number of 858. Octpentoctium, also known as element 858, has otte­hundrede og otte­og­halvtreds protons in its nucleus, and otte­hundrede og otte­og­halvtreds electrons in its shells.