Why a neutron is considered the most effective bombarding particle in nuclear reactions?

The question is taken from the chapter 'Nuclear physics'.

Q. Why a neutron is considered the most important bombarding particle in nuclear reactions?

Ans: Protons and electrons are charge carriers and the neutrons are chargeless particles. If a proton or electron is used as bombarding particle, it is deflected by the applied field. But if a neutron is used, it reaches to the target place without deflection and the protonneutron ratio causing instability of nucleus. So, neutron is considered as the most effective bombarding particle in nuclear reaction.