Question

Which of the following particles is used to bombard ${}_{13}{Al}^{28}$ to give ${}_{15}{P}^{31}$ and a neutron?

• A. Deuterium
• B. Neutron
• C. $\alpha$ - particle
• D. $\beta$ - particle

Answer 1

The correct option is C $\alpha$ - particle

Alpha particles are helium nuclei. $\alpha ={}_2^4{He}^{2+}$
So, the required reaction is,
${}_{13}^{28}Al{+}_2^{4}He\to {}_{15}^{31}P+{}_0^{1}n$