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Cuadro de texto:   -  Atomic Mass: 240.0538075 ± 0.0000021 amu -  Excess Mass: 50121.319 ± 1.947 keV -  Binding Energy: 1813454.935 ± 1.974 keV -  Beta Decay Energy: B- -1378.952 ± 13.790 keV -  Spin: 0+ -  Half life: 6564 years -  Mode of decay: Alpha to U-236 º  Decay energy: 5.256 MeV -  Mode of decay: SF º  Branch ratio: 5.7E-6 % -  Meta state at 2.800 Mev    Spin: (0+)     Half life: 3.7 ns  -  Mode of decay: SF º  Branch ratio: >0.00 % -  Possible parent nuclides:                                                                Beta from Np-240                                                                Electron capture from Am-240                                                                Alpha from Cm-244