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 gjashtëqind e dyzet e nëntë protons in its nucleus, and gjashtëqind e dyzet e nëntë electrons in its shells.