Pentquadennium (Pqe)

Pentquadennium is the systematic name of the theoretical ที่ 549 element in the periodic table with a symbol of Pqe and atomic number of 549. Pentquadennium, also known as element 549, has ห้า​ร้อย​สี่​สิบ​เก้า protons in its nucleus, and ห้า​ร้อย​สี่​สิบ​เก้า electrons in its shells.