Hexhexennium (Hhe)

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