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-  Atomic Mass: 227.0349583 ± 0.0000779 amu 
-  Excess Mass: 32563.406 ± 72.555 keV 
-  Binding Energy: 1726868.005 ± 72.556 keV 
-  Half life: 0.51 s 
-  Mode of decay: Alpha to Pa-223 
º  Decay energy: 7.816 MeV