Octtriunium (Otu)
Octtriunium is the systematic name of the theoretical ที่ 831 element in the periodic table with a symbol of Otu and atomic number of 831. Octtriunium, also known as element 831, has แปดร้อยสามสิบเอ็ด protons in its nucleus, and แปดร้อยสามสิบเอ็ด electrons in its shells.