Octnilennium (One)

Octnilennium is the systematic name of the theoretical ที่ 809 element in the periodic table with a symbol of One and atomic number of 809. Octnilennium, also known as element 809, has แปด​ร้อย​เก้า protons in its nucleus, and แปด​ร้อย​เก้า electrons in its shells.