Class 12 NEET Physics Atoms and Nuclei Part 1

1. Concept: The nuclear reaction describes the transformation of a nucleus by emitting a beta particle.2. Explanation: In the given reaction, $z^{X} \rightarrow z+1 Y^{A}+_{-1} e^{0}+\overline{v}$, the parent nucleus $X$ transforms into a daughter nucleus $Y$. The atomic number increases by 1 ($z \rightarrow z+1$), and an electron ($_{-1} e^{0}$) and an antineutrino ($\overline{v}$) are emitted. This is characteristic of beta-minus ($\beta^-$) decay.3. Answer: A. $\beta$ -decay