Pentquadnilium (Pqn)

Pentquadnilium is the systematic name of the theoretical ۵۴۰. element in the periodic table with a symbol of Pqn and atomic number of 540. Pentquadnilium, also known as element 540, has پانصد و چهل protons in its nucleus, and پانصد و چهل electrons in its shells.