In which of the following decays the atomic number decreases?
β+-decay
beta−-decay
α- decay
γ-decay
A
β+-decay
B
beta−-decay
C
α- decay
D
γ-decay
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Solution
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in α decay atomic number decreases by two and in β+the weak interaction converts an atomic nucleus into a nucleus with atomic number decreased by one, while emitting a positron.
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