Octpentoctium (Opo)

Octpentoctium is the systematic name of the theoretical ۸۵۸. element in the periodic table with a symbol of Opo and atomic number of 858. Octpentoctium, also known as element 858, has هشتصد و پنجاه و هشت protons in its nucleus, and هشتصد و پنجاه و هشت electrons in its shells.