# Inner electrons 84 # Outer electrons 58 # Protons 142 Abundance 11.11 An-Isotope 58:142 Approval Stats BE - Actual 1185.28 BE - Nucleon 8347.07 Element Cerium Half Life 5E+016 Y Mass Actual 141.91 Mass Calculated 143.11 Mass H Norm 140.81 Stability Stable
