Hexquadnilium (Hqn)

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