(B) In $\alpha$ decay, the atomic number $Z$ decreases by $2$ and the mass number $A$ decreases by $4$. In $\beta^-$ decay, $Z$ increases by $1$ and $

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Isotope of the original nucleus is produced

(B) In $\alpha$ decay, the atomic number $Z$ decreases by $2$ and the mass number $A$ decreases by $4$. In $\beta^-$ decay, $Z$ increases by $1$ and $A$ remains constant. In $\beta^+$ decay, $Z$ decreases by $1$ and $A$ remains constant.An isotope has the same atomic number $Z$ but a different mass number $A$. Since $\alpha$ decay changes $Z$ and $\beta$ decay changes $Z$, neither process can produce an isotope of the original nucleus. Thus, the correct answer is that an isotope of the original nucleus cannot be produced.

Class 12 Physics Nuclei Properties of Alpha, Beta and Gamma Rays and Decay Process

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For the radioactive nuclei that undergo either $\alpha$ or $\beta$ decay, which one of the following cannot occur?

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A
Isobar of original nucleus is produced
B
Isotope of the original nucleus is produced
C
Nuclei with higher atomic number than that of the original nucleus is produced
D
Nuclei with lower atomic number than that of the original nucleus is produced

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Nuclei

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Properties of Alpha, Beta and Gamma Rays and Decay Process

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The intensity of gamma radiation emitted from a source is $I_0$. After passing through a lead sheet of thickness $36 \, mm$,its intensity becomes $I_0/8$. Find the thickness of the lead sheet in $mm$ when the intensity becomes $I_0/2$.

Medium

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In the nuclear decay sequence given below:
$_Z{X^A} \to {}_{Z + 1}{Y^A} \to {}_{Z - 1}{K^{A - 4}} \to {}_{Z - 1}{K^{A - 4}}$
the particles emitted in the sequence are:

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$_{90}^{232}Th$,an isotope of thorium,decays in ten stages,emitting six $\alpha$-particles and four $\beta$-particles in total. The end product of the decay is:

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Find the $Q$-value and the kinetic energy of the emitted $\alpha$-particle in the $\alpha$-decay of $(a) \; ^{226}_{88} Ra$ and $(b) \; ^{220}_{86} Rn$.
Given:
$m(^{226}_{88} Ra) = 226.02540 \; u$
$m(^{222}_{86} Rn) = 222.01750 \; u$
$m(^{220}_{86} Rn) = 220.01137 \; u$
$m(^{216}_{84} Po) = 216.00189 \; u$
$m(^{4}_{2} He) = 4.002603 \; u$

Medium

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Which of the following is emitted, when ${ }_{94}^{239} Pu$ decays into ${ }_{92}^{235} U$?

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For the radioactive nuclei that undergo either $\alpha$ or $\beta$ decay, which one of the following cannot occur?

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The intensity of gamma radiation emitted from a source is $I_0$. After passing through a lead sheet of thickness $36 \, mm$,its intensity becomes $I_0/8$. Find the thickness of the lead sheet in $mm$ when the intensity becomes $I_0/2$.

In the nuclear decay sequence given below:$_Z{X^A} \to {}_{Z + 1}{Y^A} \to {}_{Z - 1}{K^{A - 4}} \to {}_{Z - 1}{K^{A - 4}}$the particles emitted in the sequence are:

$_{90}^{232}Th$,an isotope of thorium,decays in ten stages,emitting six $\alpha$-particles and four $\beta$-particles in total. The end product of the decay is:

Which of the following is emitted, when ${ }_{94}^{239} Pu$ decays into ${ }_{92}^{235} U$?

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In the nuclear decay sequence given below:
$_Z{X^A} \to {}_{Z + 1}{Y^A} \to {}_{Z - 1}{K^{A - 4}} \to {}_{Z - 1}{K^{A - 4}}$
the particles emitted in the sequence are: