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Cuadro de texto:   -  Atomic Mass: 227.0311401 ± 0.0000183 amu -  Excess Mass: 29006.783 ± 17.068 keV -  Binding Energy: 1731206.981 ± 17.071 keV -  Beta Decay Energy: B- -3556.622 ± 74.423 keV -  Spin: (3/2+) -  Half life: 1.1 min -  Mode of decay: Alpha to Th-223 º  Decay energy: 7.211 MeV