Hexquadquadium (Hqq)

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