Final Answer:
Neutrons have appreciable mass, approximately 1 atomic mass unit, but no electric charge. They are subatomic particles found in atomic nuclei, alongside protons, contributing to the nucleus's mass.
Step-by-step explanation:
Neutrons have appreciable mass but no electric charge. A neutron is a subatomic particle found in the nucleus of an atom, alongside protons. The mass of a neutron is approximately 1 atomic mass unit, making it slightly heavier than a proton. While the mass of a neutron is significant at the atomic and subatomic levels, it is still considered small in the macroscopic world.
Neutrons carry no electric charge, unlike protons, which have a positive charge. This lack of charge allows neutrons to penetrate atomic nuclei more effectively than charged particles, making them essential for various applications, including neutron scattering experiments and nuclear reactions. The combination of neutrons and protons in the atomic nucleus contributes to the overall mass of an atom without directly affecting its electrical charge.