Question

Neutrons were discovered by bombarding beryllium with ________ particles.

Answer 1

1. In 1932, James Chadwick discovered the neutron during an experiment involving the nuclear reaction in which beryllium was bombarded with alpha particles.
2. Nuclear reaction involved: $$\begin{gathered} {}_4\mathrm{Be}^9+{}_2\mathrm{He}^4\to {}_6\mathrm{C}^{12}+{}_0\mathrm{n}^1 \\ \mathrm{Beryllium}\mathrm{Alpha}\mathrm{Carbon}\mathrm{neutron} \\ \mathrm{particles} \end{gathered}$$
3. Hence, Neutrons were discovered by bombarding beryllium with alpha particles.