# Inner electrons 148 # Outer electrons 94 # Protons 242 An-Isotope 94:242 Approval Stats BE - Actual 1825.00 BE - Nucleon 7541.33 Decay A 100, SF 0.00055 Element Plutonium Half Life 375000 Y Mass Actual 242.06 Mass Calculated 243.89 Mass H Norm 240.18 Stability Unstable
