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 εξακόσια εβδομήντα εννέα protons in its nucleus, and εξακόσια εβδομήντα εννέα electrons in its shells.