Hexhexunium (Hhu)

Hexhexunium is the systematic name of the theoretical 661. element in the periodic table with a symbol of Hhu and atomic number of 661. Hexhexunium, also known as element 661, has šeši šimtai šešiasdešimt vienas protons in its nucleus, and šeši šimtai šešiasdešimt vienas electrons in its shells.