Octununium (Ouu)
Octununium is the systematic name of the theoretical ที่ 811 element in the periodic table with a symbol of Ouu and atomic number of 811. Octununium, also known as element 811, has แปดร้อยสิบเอ็ด protons in its nucleus, and แปดร้อยสิบเอ็ด electrons in its shells.