Which type of particle is located in an atom's nucleus and is neutral?

The correct answer is the neutron because it is a subatomic particle found in the nucleus of an atom that carries no electric charge, making it neutral. The nucleus is composed of protons, which are positively charged, and neutrons. The presence of neutrons helps stabilize the nucleus despite the repulsive forces between positively charged protons.

Understanding the role of neutrons is crucial in discussing atomic structure, isotopes, and nuclear stability. Anions and cations are terms that refer to charged atoms or molecules—anion being negatively charged and cation being positively charged—while electrons are negatively charged particles that orbit the nucleus, contributing to an atom's overall charge balance but not residing within the nucleus itself.