Which subatomic particle is neutral and located in the nucleus along with protons?

• A. Electron
• B. Proton
• C. Neutron
• D. Positron

Answer: (C)

The neutral particle inside the nucleus with protons is the neutron. The nucleus is made of nucleons—protons, which are positively charged, and neutrons, which have no charge. Electrons, carrying negative charge, orbit outside the nucleus. Neutrons add mass and help hold the nucleus together through the strong nuclear force, without adding electrical charge. Positrons are positively charged antiparticles of electrons and are not the neutral component located in the nucleus. So the neutron fits the description best.