After one alpha and two beta emissions,what h | vedclass

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(B) An $\alpha$ decay involves the emission of a helium nucleus $(_{2}^{4}He)$,which decreases the mass number $(A)$ by $4$ and the atomic number $(Z)

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Mass number reduces by $4$

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(B) An $\alpha$ decay involves the emission of a helium nucleus $(_{2}^{4}He)$,which decreases the mass number $(A)$ by $4$ and the atomic number $(Z)$ by $2$. $A$ $\beta$ decay involves the emission of an electron $(_{-1}^{0}e)$,which leaves the mass number $(A)$ unchanged and increases the atomic number $(Z)$ by $1$. Starting with a nucleus $_{Z}^{A}X$: $1$. After one $\alpha$ emission: $_{Z-2}^{A-4}Y$. $2$. After two $\beta$ emissions: $_{Z-2+2}^{A-4}X = _{Z}^{A-4}X$. Thus,the mass number reduces by $4$ and the atomic number remains unchanged.

After one $\alpha$ and two $\beta$ emissions,what happens to the nucleus?

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