Cuadro de texto:   -  Atomic Mass: 215.0117266 ± 0.0000711 amu -  Excess Mass: 10923.253 ± 66.213 keV -  Binding Energy: 1653999.345 ± 66.213 keV -  Beta Decay Energy: B- -6866.055 ± 141.492 keV -  Spin: (1/2-) -  Half life: 1.2 s -  Mode of decay: Alpha to Ra-211 º  Decay energy: 7.666 MeV

        

 

 

 

 

 

 

 

 

 

 

 

 

 

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