Which particle in an atom has no charge?

In an atom, the particle that has no charge is the neutron. Neutrons are found in the nucleus of the atom alongside protons. While protons carry a positive charge and electrons carry a negative charge, neutrons are neutral, meaning they do not have any electrical charge at all. This neutrality is significant because it allows neutrons to contribute to the mass of the atom without affecting its overall charge.

The presence of neutrons helps to stabilize the nucleus of an atom by offsetting the repulsive forces between the positively charged protons. This balance of forces is crucial for the integrity of the atomic structure. In summary, neutrons are essential for the physical stability of atoms while remaining electrically neutral.