Hexquadquadium (Hqq)

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