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NEET 2021 · Radioactive Decays: Alpha, Beta, Gamma

Radioactive Decays: Alpha, Beta, Gamma question from NEET 2021

Q18NEET 2021Medium

Radioactive Decays: Alpha, Beta, Gamma

A radioactive nucleus

${}_{Z}^{A}X \rightarrow {}_{Z-1}B \rightarrow {}_{Z-3}C \rightarrow {}_{Z-2}D$ ,

where Z is the atomic number of element X. The possible decay particles in the sequence are:

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Answer: (d)

$Z \to Z-1$ : $\beta^+$ .
$Z-1 \to Z-3$ : $\alpha$ .
$Z-3 \to Z-2$ : $\beta^-$ .
So the answer is (d) $\beta^{+},\ \alpha,\ \beta^{-}$ .

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