Pentquadnilium (Pqn)

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