Hexquadennium (Hqe)

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