NEET UG PHYSICS MCQ: NUCLEI

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Analyzing +4 | -1

In the nuclear decay given below:

{ }_{\mathrm{Z}}^{\mathrm{A}} \mathrm{X} \longrightarrow{ }_{\mathrm{Z}+1}^{\mathrm{A}}\mathrm{Y} \longrightarrow{ }_{\mathrm{Z}-1}^{\mathrm{A}-4} \mathrm{~B}^* \longrightarrow{ }_{\mathrm{Z}-1}^{\mathrm{A}-4} \mathrm{~B} \text {, }

the particles emitted in the sequence are

View answer and explanation

Correct option: D

\beta, \alpha, \gamma

Option D (β, α, γ) is correct because the first decay increases the atomic number by 1 (beta decay), the second decay decreases the mass number by 4 and atomic number by 2 (alpha decay), and the third decay releases energy without changing A or Z (gamma decay).