Question

In a radioactive decay process, a ${}_z{X}^A$ nucleus changes to ${}_{z-1}{Y}^{A-4}$ nucleus. How many $\alpha$ and $\beta$ particles are emitted ?

• A. $1\alpha ,4\beta$
• B. $1\alpha ,1\beta$
• C. $3\alpha ,4\beta$
• D. $2\alpha ,7\beta$

Answer 1

The correct option is B $1\alpha ,1\beta$

${}_Z{X}^A\to {}_{Z-1}{Y}^{A-4}+{}_2{\alpha }^4{+}_{-1}{\beta }^0$

So, $1\alpha$ and $1\beta$ paticle will be emitted.