Pentnilpentium (Pnp)
Pentnilpentium is the systematic name of the theoretical ۵۰۵. element in the periodic table with a symbol of Pnp and atomic number of 505. Pentnilpentium, also known as element 505, has پانصد و پنج protons in its nucleus, and پانصد و پنج electrons in its shells.