The subatomic particle that has a neutral charge is called the neutron. Neutrons are found in the nucleus of an atom, along with protons. While protons have a positive charge, neutrons have no charge, making them electrically neutral.
Neutrons play a crucial role in the stability of an atom. They help bind the nucleus together through the strong nuclear force, which counteracts the repulsive force between positively charged protons. Without neutrons, the nucleus would not hold together, and atoms would not exist as we know them.
In summary, neutrons are neutral subatomic particles that are essential for the structure and stability of atomic nuclei.