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 sechs­hundert­vier­und­vierzig protons in its nucleus, and sechs­hundert­vier­und­vierzig electrons in its shells.