(a)
Interpretation: The question based on the isotopes of bromine, are to be answered.
Concept introduction: The nuclide that lies above the green belt in the graph of belt of stability, are nuclear rich and those that lie below the green region is nuclear poor. Green nuclide represents stable nuclides and orange nuclide represents unstable nuclide.
The isotopes that are nuclear rich undergo beta emission.
The isotopes that are nuclear poor undergo positron emission or electron capture.
To determine: The number of isotopes of bromine that undergoes positron emission and electron capture.
(b)
To determine: The number of isotopes of bromine that undergoes beta decay.
(c)
To determine: The number of isotopes of bromine that undergoes both positron emission beta decay.
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