Hexpentennium (Hpe)
Hexpentennium is the systematic name of the theoretical ٦٥٩. element in the periodic table with a symbol of Hpe and atomic number of 659. Hexpentennium, also known as element 659, has ستة مائة وتسعة وخمسون protons in its nucleus, and ستة مائة وتسعة وخمسون electrons in its shells.