Hexquadennium (Hqe)

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