Octunennium (Oue)
Octunennium is the systematic name of the theoretical ที่ 819 element in the periodic table with a symbol of Oue and atomic number of 819. Octunennium, also known as element 819, has แปดร้อยสิบเก้า protons in its nucleus, and แปดร้อยสิบเก้า electrons in its shells.