Septseptennium (Sse)

Septseptennium is the systematic name of the theoretical 779. element in the periodic table with a symbol of Sse and atomic number of 779. Septseptennium, also known as element 779, has siwen­honnert­néngansiwwenzeg protons in its nucleus, and siwen­honnert­néngansiwwenzeg electrons in its shells.