Octpentennium (Ope)
Octpentennium is the systematic name of the theoretical 859ste element in the periodic table with a symbol of Ope and atomic number of 859. Octpentennium, also known as element 859, has agthonderd nege-en-vyftig protons in its nucleus, and agthonderd nege-en-vyftig electrons in its shells.