Hexquadnilium (Hqn)

Hexquadnilium is the systematic name of the theoretical 640. element in the periodic table with a symbol of Hqn and atomic number of 640. Hexquadnilium, also known as element 640, has seks­hundrað­og­fýrati protons in its nucleus, and seks­hundrað­og­fýrati electrons in its shells.