Pentpentennium (Ppe)
Pentpentennium is the systematic name of the theoretical ۵۵۹. element in the periodic table with a symbol of Ppe and atomic number of 559. Pentpentennium, also known as element 559, has پانصد و پنجاه و نه protons in its nucleus, and پانصد و پنجاه و نه electrons in its shells.