Pentpentunium (Ppu)

Pentpentunium is the systematic name of the theoretical 551. element in the periodic table with a symbol of Ppu and atomic number of 551. Pentpentunium, also known as element 551, has penki šimtai penkiasdešimt vienas protons in its nucleus, and penki šimtai penkiasdešimt vienas electrons in its shells.