Octunseptium (Ous)
Octunseptium is the systematic name of the theoretical ที่ 817 element in the periodic table with a symbol of Ous and atomic number of 817. Octunseptium, also known as element 817, has แปดร้อยสิบเจ็ด protons in its nucleus, and แปดร้อยสิบเจ็ด electrons in its shells.