Septseptennium (Sse)
Septseptennium is the systematic name of the theoretical thứ 779 element in the periodic table with a symbol of Sse and atomic number of 779. Septseptennium, also known as element 779, has bảy trăm bảy mươi chín protons in its nucleus, and bảy trăm bảy mươi chín electrons in its shells.