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 šeši šimtai keturiasdešimt devyni protons in its nucleus, and šeši šimtai keturiasdešimt devyni electrons in its shells.