Octunoctium (Ouo)
Octunoctium is the systematic name of the theoretical 818. element in the periodic table with a symbol of Ouo and atomic number of 818. Octunoctium, also known as element 818, has οκτακόσια δεκαοκτώ protons in its nucleus, and οκτακόσια δεκαοκτώ electrons in its shells.