Pentquadennium (Pqe)

Pentquadennium is the systematic name of the theoretical 549'инчи element in the periodic table with a symbol of Pqe and atomic number of 549. Pentquadennium, also known as element 549, has беш жүз кырк тогуз protons in its nucleus, and беш жүз кырк тогуз electrons in its shells.