Pentoctennium (Poe)

Pentoctennium is the systematic name of the theoretical 589e element in the periodic table with a symbol of Poe and atomic number of 589. Pentoctennium, also known as element 589, has vijf­honderd­negen­en­tachtig protons in its nucleus, and vijf­honderd­negen­en­tachtig electrons in its shells.