Septoctunium (Sou)

Septoctunium is the systematic name of the theoretical 781. element in the periodic table with a symbol of Sou and atomic number of 781. Septoctunium, also known as element 781, has յոթ­հարյուր ութսուն­մեկ protons in its nucleus, and յոթ­հարյուր ութսուն­մեկ electrons in its shells.