Cuadro de texto:   -  Atomic Mass: 138.9063482 ± 0.0000035 amu -  Excess Mass: -87236.114 ± 3.215 keV -  Binding Energy: 1164555.840 ± 3.221 keV -  Beta Decay Energy: B- -278.000 ± 7.000 keV -  Atomic Percent Abundance: 99.9098% -  Spin: 7/2+ -  Stable Isotope -  Possible parent nuclides:     Beta from Ba-139     Electron capture from Ce-139

 

 

 

 

 

 

 

 

 

 

 

 

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