Septseptennium (Sse)
Septseptennium is the systematic name of the theoretical ۷۷۹. element in the periodic table with a symbol of Sse and atomic number of 779. Septseptennium, also known as element 779, has هفتصد و هفتاد و نه protons in its nucleus, and هفتصد و هفتاد و نه electrons in its shells.