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