Which of the following cannot be emitted by r | vedclass

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(A) Radioactive decay involves the emission of particles from an unstable nucleus to achieve stability. Common emissions include: $1$. Alpha particles

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Proton

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(A) Radioactive decay involves the emission of particles from an unstable nucleus to achieve stability. Common emissions include: $1$. Alpha particles ($He^{2+}$ nucleus): Emitted during alpha decay. $2$. Beta particles (electrons or positrons): Emitted during beta decay ($n ightarrow p + e^- + \bar{
u}_e$ or $p ightarrow n + e^+ + 
u_e$). $3$. Gamma rays: High-energy photons emitted during transitions between nuclear energy levels. Protons are generally not emitted during standard radioactive decay processes (except in rare cases like proton emission in highly proton-rich nuclei,which is not considered a standard decay mode in this context). Therefore,the correct option is $A$.

Which of the following cannot be emitted by radioactive substances during their decay?

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