Septseptoctium (Sso)
Septseptoctium is the systematic name of the theoretical ۷۷۸. element in the periodic table with a symbol of Sso and atomic number of 778. Septseptoctium, also known as element 778, has هفتصد و هفتاد و هشت protons in its nucleus, and هفتصد و هفتاد و هشت electrons in its shells.