Cuadro de texto:   -  Atomic Mass: 20.9976551 ±  0.0000008 amu -  Excess Mass: -2184.261 ±  0.700 keV -  Binding Energy: 163076.152 ±  0.700 keV -  Beta Decay Energy: B- -13095.942 ±  16.431 keV -  Spin: 3/2+ -  Half life: 22.49 s -  Mode of decay: Electron capture to Ne-21 º  Decay energy: 3.547 MeV -  Possible parent nuclides:                                             Electron capture from Mg-21                                             EC + P from Al-22

 

 

 

 

 

 

 

 

 

 

 

 

 

 

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