Question

During the emission of $\mathrm{\beta }$-particle , the ___________ number remains the same.

Answer 1

1. During the emission of $\mathrm{\beta }$-particle mass number of an element does not change but the atomic number increases by one unit.
2. Because of mass number of $\mathrm{\beta }$-particle is zero and it is negatively charged particles.
3. The nuclear equation is represented as

${}_{\mathrm{Z}}{}^{\mathrm{A}}X\to {}_{\mathrm{Z}+1}{}^{\mathrm{A}}\mathrm{Y}+{}_{-1}{}^0\mathrm{\beta }$

Here, the mass number of nucleus $XandY$ remains the same after the emission of $\mathrm{\beta }$-particle.