Which subatomic particle has no electric charge and resides in the nucleus for all atoms except hydrogen?

Which subatomic particle has no electric charge and resides in the nucleus for all atoms except hydrogen?

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

Answer: (D)

Neutrons are uncharged particles that reside in the atomic nucleus along with protons. They add mass to the nucleus and help hold it together through the strong force, but they do not contribute to the electric charge. The exception is hydrogen-1, whose nucleus consists of a single proton and no neutrons. Protons are positively charged and located in the nucleus, while electrons are negatively charged and orbit outside the nucleus. Because of these characteristics, the particle that fits the description is the neutron.

Neutrons are uncharged particles that reside in the atomic nucleus along with protons. They add mass to the nucleus and help hold it together through the strong force, but they do not contribute to the electric charge. The exception is hydrogen-1, whose nucleus consists of a single proton and no neutrons. Protons are positively charged and located in the nucleus, while electrons are negatively charged and orbit outside the nucleus. Because of these characteristics, the particle that fits the description is the neutron.