Hexhexennium (Hhe)

Hexhexennium is the systematic name of the theoretical 669-шы element in the periodic table with a symbol of Hhe and atomic number of 669. Hexhexennium, also known as element 669, has алты жүз алпыс тоғыз protons in its nucleus, and алты жүз алпыс тоғыз electrons in its shells.