Cuadro de texto:   -  Atomic Mass: 138.9187869 ± 0.0000227 amu -  Excess Mass: -75649.542 ± 21.101 keV -  Binding Energy: 1155316.329 ± 21.102 keV -  Beta Decay Energy: B- 5057.023 ± 20.655 keV -  Spin: 3/2- -  Half life: 39.68 s -  Mode of decay: Beta to Cs-139 º  Decay energy: 5.057 MeV .

 

 

 

 

 

 

 

 

 

 

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