Pentpentoctium (Ppo)
Pentpentoctium is the systematic name of the theoretical 558. element in the periodic table with a symbol of Ppo and atomic number of 558. Pentpentoctium, also known as element 558, has חמש מאות חמישים ושמונה protons in its nucleus, and חמש מאות חמישים ושמונה electrons in its shells.