Hexhexquadium (Hhq)
Hexhexquadium is the systematic name of the theoretical 664. element in the periodic table with a symbol of Hhq and atomic number of 664. Hexhexquadium, also known as element 664, has kuussada kuuskümmend neli protons in its nucleus, and kuussada kuuskümmend neli electrons in its shells.