Hexquadquadium (Hqq)

Hexquadquadium is the systematic name of the theoretical 644:e element in the periodic table with a symbol of Hqq and atomic number of 644. Hexquadquadium, also known as element 644, has sex­hundra­fyrtio­fyra protons in its nucleus, and sex­hundra­fyrtio­fyra electrons in its shells.