Hexpentennium (Hpe)

Hexpentennium is the systematic name of the theoretical 659. element in the periodic table with a symbol of Hpe and atomic number of 659. Hexpentennium, also known as element 659, has šeši šimtai penkiasdešimt devyni protons in its nucleus, and šeši šimtai penkiasdešimt devyni electrons in its shells.