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Cuadro de texto:   -  Atomic Mass: 239.0529314 ± 0.0000023 amu -  Excess Mass: 49305.273 ± 2.133 keV -  Binding Energy: 1806982.011 ± 2.158 keV -  Beta Decay Energy: B- 721.796 ± 0.874 keV -  Spin: 5/2+ -  Half life: 2.3565 d -  Mode of decay: Beta to Pu-239 º  Decay energy: 0.722 MeV -  Possible parent nuclides:                                                                 Beta from U-239                                                                 Alpha from Am-243