Hexseptennium (Hse)
Hexseptennium is the systematic name of the theoretical 679. element in the periodic table with a symbol of Hse and atomic number of 679. Hexseptennium, also known as element 679, has šeši šimtai septyniasdešimt devyni protons in its nucleus, and šeši šimtai septyniasdešimt devyni electrons in its shells.