Hexquadennium (Hqe)

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