Hexquadquadium (Hqq)

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