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