Which subatomic particle has no charge and is found in the nucleus of an atom?

Which subatomic particle has no charge and is found in the nucleus of an atom?

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

Answer: (B)

In atoms, the nucleus is made up of protons and neutrons, while electrons orbit around outside the nucleus. The particle that has no electric charge and sits in the nucleus is the neutron. It contributes to the atom’s mass and, together with protons, is held in the nucleus by the strong nuclear force. The other options don’t fit: electrons are negatively charged and located outside the nucleus; protons are positively charged and reside in the nucleus; a positron is the antiparticle of the electron with a positive charge and isn’t a standard constituent of the nucleus in ordinary atoms.

In atoms, the nucleus is made up of protons and neutrons, while electrons orbit around outside the nucleus. The particle that has no electric charge and sits in the nucleus is the neutron. It contributes to the atom’s mass and, together with protons, is held in the nucleus by the strong nuclear force. The other options don’t fit: electrons are negatively charged and located outside the nucleus; protons are positively charged and reside in the nucleus; a positron is the antiparticle of the electron with a positive charge and isn’t a standard constituent of the nucleus in ordinary atoms.