Octpentseptium (Ops)

Octpentseptium is the systematic name of the theoretical 857. element in the periodic table with a symbol of Ops and atomic number of 857. Octpentseptium, also known as element 857, has otte­hundrede og syv­og­halvtreds protons in its nucleus, and otte­hundrede og syv­og­halvtreds electrons in its shells.