Pentpentunium (Ppu)

Pentpentunium is the systematic name of the theoretical 551ste element in the periodic table with a symbol of Ppu and atomic number of 551. Pentpentunium, also known as element 551, has vyfhonderd een-en-vyftig protons in its nucleus, and vyfhonderd een-en-vyftig electrons in its shells.