Pentquadennium (Pqe)

Pentquadennium is the systematic name of the theoretical ۵۴۹. element in the periodic table with a symbol of Pqe and atomic number of 549. Pentquadennium, also known as element 549, has پانصد و چهل و نه protons in its nucleus, and پانصد و چهل و نه electrons in its shells.