Pentquadnilium (Pqn)

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