Septoctunium (Sou)

Septoctunium is the systematic name of the theoretical ที่ 781 element in the periodic table with a symbol of Sou and atomic number of 781. Septoctunium, also known as element 781, has เจ็ด​ร้อย​แปด​สิบ​เอ็ด protons in its nucleus, and เจ็ด​ร้อย​แปด​สิบ​เอ็ด electrons in its shells.