Question

In the given reaction

${}_z{X}^A{\to }_{z+1}{Y}^A{\to }_{z-1}{K}^{A-4}{\to }_{z-1}{K}^{A-4}$
Radioactive radiations are emitted in the sequence of

• A. $\alpha ,\beta ,\gamma$
• B. $\beta ,\alpha ,\gamma$
• C. $\gamma ,\alpha ,\beta$
• D. $\beta ,\gamma ,\alpha$

Answer 1

The correct option is B $\beta ,\alpha ,\gamma$

Given reaction can be considered as
${}_z{X}^A{\stackrel{{}_{-1}{\beta }^0}{⟶}}_{Z+1}{Y}^A{\stackrel{{}_{2}H{e}^4\left(\alpha \right)}{⟶}}_{Z-1}{K}^{A-4}{\stackrel{{}_0{\gamma }^0}{⟶}}_{Z-1}{K}^{A-4}$

So, $\beta ,\alpha ,\gamma$ particles are released in the sequence.