Which particle is found in an atom's nucleus and has no electric charge?

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

Answer: (C)

The neutron is the particle found in an atom's nucleus that has no electric charge. In the context of atomic structure, neutrons play a crucial role in contributing to the mass of the atom and stabilizing the nucleus, working alongside protons, which are positively charged. The absence of an electric charge on neutrons differentiates them from protons and electrons. Protons carry a positive charge and are also found in the nucleus, while electrons are negatively charged particles located outside the nucleus. An ion is not a particle within the nucleus; rather, it is an atom or molecule that has lost or gained electrons, resulting in a net charge. Thus, neutrons are integral to the structure and stability of the atom while being neutral in terms of electric charge.