Octpentpentium (Opp)
Octpentpentium is the systematic name of the theoretical 855. element in the periodic table with a symbol of Opp and atomic number of 855. Octpentpentium, also known as element 855, has восемьсот пятьдесят пять protons in its nucleus, and восемьсот пятьдесят пять electrons in its shells.