palladium4dPalladium possesses a total of 10 valence electrons, which reside in the outermost energy level. The electron confuration of palladium reveals that it has 2 electrons in the 4s orbital, 6Palladium is a silvery-white metal used in jewelry, catalysts, electronics, and fuel cells. Palladium is a lustrous silver-white metal with element symbol Pd and atomic number