Hexhexennium (Hhe)
Hexhexennium is the systematic name of the theoretical 669. element in the periodic table with a symbol of Hhe and atomic number of 669. Hexhexennium, also known as element 669, has gjashtëqind e gjashtëdhjetë e nëntë protons in its nucleus, and gjashtëqind e gjashtëdhjetë e nëntë electrons in its shells.