Septtriunium (Stu)

Septtriunium is the systematic name of the theoretical thứ 731 element in the periodic table with a symbol of Stu and atomic number of 731. Septtriunium, also known as element 731, has bảy trăm ba mươi mốt protons in its nucleus, and bảy trăm ba mươi mốt electrons in its shells.