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 seks­hundrað­og­fimmti­níggju protons in its nucleus, and seks­hundrað­og­fimmti­níggju electrons in its shells.