Hexquadennium (Hqe)

Hexquadennium is the systematic name of the theoretical 649. element in the periodic table with a symbol of Hqe and atomic number of 649. Hexquadennium, also known as element 649, has sechs­hundert­neun­und­vierzig protons in its nucleus, and sechs­hundert­neun­und­vierzig electrons in its shells.