Octnilseptium (Ons)
Octnilseptium is the systematic name of the theoretical 807. element in the periodic table with a symbol of Ons and atomic number of 807. Octnilseptium, also known as element 807, has แ แแแแกยญแจแแแแ protons in its nucleus, and แ แแแแกยญแจแแแแ electrons in its shells.