Cuadro de texto:   -  Atomic Mass: 39.9639987 ± 0.0000003 amu -  Excess Mass: -33535.016 ± 0.271 keV -  Binding Energy: 341523.214 ± 0.276 keV -  Beta Decay Energy: B- 1311.093 ± 0.118 keV -  Atomic Percent Abundance: 0.0117% -  Spin: 4- -  Half life: 1.277E+9 years -  Mode of decay: Beta to Ca-40 º  Branch ratio: 89.28 % º  Decay energy: 1.311 MeV -  Mode of decay: Electron capture to Ar-40 º  Branch ratio: 10.72 % º  Decay energy: 1.505 MeV

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

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