Pentpentnilium (Ppn)

Pentpentnilium is the systematic name of the theoretical ที่ 550 element in the periodic table with a symbol of Ppn and atomic number of 550. Pentpentnilium, also known as element 550, has ห้า​ร้อย​ห้า​สิบ protons in its nucleus, and ห้า​ร้อย​ห้า​สิบ electrons in its shells.