Which particle does not have a charge?

The neutron is the particle that does not have a charge. It is one of the three main constituents of an atom, along with protons and electrons. Protons carry a positive charge, while electrons carry a negative charge. Neutrons, on the other hand, are neutral; they occupy the nucleus of an atom alongside protons and contribute to the atomic mass but do not influence the electric charge of the atom.

Understanding the role of neutrons helps in grasping fundamental concepts in chemistry, such as isotopes, which are variants of an element that have the same number of protons but different numbers of neutrons, affecting their stability and nuclear properties without altering their chemical behavior.