Pentoctennium (Poe)
Pentoctennium is the systematic name of the theoretical ۵۸۹. element in the periodic table with a symbol of Poe and atomic number of 589. Pentoctennium, also known as element 589, has پانصد و هشتاد و نه protons in its nucleus, and پانصد و هشتاد و نه electrons in its shells.