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 ხუთას­ორმოცი protons in its nucleus, and ხუთას­ორმოცი electrons in its shells.