Hexpentennium (Hpe)

Hexpentennium is the systematic name of the theoretical 659-шы element in the periodic table with a symbol of Hpe and atomic number of 659. Hexpentennium, also known as element 659, has алты жүз елу тоғыз protons in its nucleus, and алты жүз елу тоғыз electrons in its shells.