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 fimm­hundrað­og­fimmti­átta protons in its nucleus, and fimm­hundrað­og­fimmti­átta electrons in its shells.