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 ութ­հարյուր հիսուն­ութ protons in its nucleus, and ութ­հարյուր հիսուն­ութ electrons in its shells.