Pentquadennium (Pqe)

Pentquadennium is the systematic name of the theoretical 549-шы element in the periodic table with a symbol of Pqe and atomic number of 549. Pentquadennium, also known as element 549, has бес жүз қырық тоғыз protons in its nucleus, and бес жүз қырық тоғыз electrons in its shells.