Septseptnilium (Ssn)

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