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