Question

The particle which can be added to the nucleus of an atom without changing its chemical properties are

• A. Protons
• B. Electrons
• C. Positrons
• D. Neutrons

Answer 1

The correct option is D Neutrons

Neutrons have no charge, i.e, neutral particle with only mass. So, the chemical properties do not change by adding it to the nucleus.

Also, chemical properties change only when there is change in atomic number. Adding a neutron does not change the atomic number

Hence, option $\left(D\right)$ is correct.