Septoctunium (Sou)

Septoctunium is the systematic name of the theoretical thứ 781 element in the periodic table with a symbol of Sou and atomic number of 781. Septoctunium, also known as element 781, has bảy trăm tám mươi mốt protons in its nucleus, and bảy trăm tám mươi mốt electrons in its shells.