Pentnilpentium (Pnp)

Pentnilpentium is the systematic name of the theoretical 505ú element in the periodic table with a symbol of Pnp and atomic number of 505. Pentnilpentium, also known as element 505, has cúig chéad a cúig protons in its nucleus, and cúig chéad a cúig electrons in its shells.