a) \({}_{94}^{238}Pu \to {}_{95}^{238}Am + {}_{ - 1}^0e + {}_0^0\widetilde v\)
b) \({}_{88}^{226}Ra \to {}_{88}^{222}Rn + {}_2^4He\)
c) \({}_7^{12}N \to {}_6^{14}C + {}_1^0e + {}_0^0v\)
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