Hexseptennium (Hse)
Hexseptennium is the systematic name of the theoretical 679-шы element in the periodic table with a symbol of Hse and atomic number of 679. Hexseptennium, also known as element 679, has алты жүз жетпіс тоғыз protons in its nucleus, and алты жүз жетпіс тоғыз electrons in its shells.