Unoctunium is the systematic name of the theoretical ที่ 181 element in the periodic table with a symbol of Uou and atomic number of 181. Unoctunium, also known as element 181, has หนึ่งร้อยแปดสิบเอ็ด protons in its nucleus, and หนึ่งร้อยแปดสิบเอ็ด electrons in its shells.