The nucleus of an atom consists mainly of: ) protons and electrons. b) protons and neutrons. c) neutrons and electrons. d) protons, neutrons, electrons. e) none of the above.

Answer : The nucleus of an atom consists mainly of : (b) protons and neutrons

Explanation:

In the model of an atom, there are three subatomic particles. Protons, neutrons and electrons are the subatomic particles.

The protons and the neutrons subatomic particles are located inside the nucleus and the electrons subatomic particle are located around or outside the nucleus.

The protons are positively charged, electrons are negatively charged and neutrons are neutral that means it has no charge.

Thus, the nucleus of an atom consists mainly of protons and neutrons.