Pentpentnilium (Ppn)
Pentpentnilium is the systematic name of the theoretical ٥٥٠. element in the periodic table with a symbol of Ppn and atomic number of 550. Pentpentnilium, also known as element 550, has خمسة مائة وخمسون protons in its nucleus, and خمسة مائة وخمسون electrons in its shells.