Septseptnilium (Ssn)
Septseptnilium is the systematic name of the theoretical ۷۷۰. element in the periodic table with a symbol of Ssn and atomic number of 770. Septseptnilium, also known as element 770, has هفتصد و هفتاد protons in its nucleus, and هفتصد و هفتاد electrons in its shells.