Which statement is true regarding neutrons?

Neutrons are subatomic particles found in the nucleus of an atom. They are unique because they possess no electric charge, which distinguishes them from protons (which have a positive charge) and electrons (which have a negative charge). The absence of charge allows neutrons to exist alongside protons in the nucleus without experiencing electrostatic repulsion, which would occur if they were charged. Additionally, neutrons contribute significantly to the atomic mass of an atom, as they, along with protons, make up the majority of the atom's mass, while electrons have negligible mass compared to protons and neutrons.

In summary, neutrons are crucial for stabilizing atomic nuclei and play an essential role in the overall mass of an atom without carrying a charge, making the statement that they have no charge and contribute to atomic mass accurate.