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The strong nuclear force is one of the four fundamental forces in nature. It plays a crucial role in holding the atomic nucleus together. Despite protons having similar positive charges, which naturally repel each other due to the electrical force, the strong nuclear force comes into play to counteract this repulsion. It is fascinatingly powerful and acts over very short distances within the nucleus, typically around a few femtometers. This powerful force is significantly stronger than the electrical force and binds protons and neutrons together.

Without the strong nuclear force, nuclei wouldn't exist as we know them because the repulsive electrical force among protons would disrupt the entire nucleus. This force is responsible for locking protons and neutrons in place, providing the necessary stability to all atomic nuclei.

The electrical force, more formally known as the electrostatic force, affects charged particles in the nucleus. Protons, which possess a positive charge, naturally repel each other due to this force.

This repulsion is due to the principle that like charges repel. In the context of an atomic nucleus, every proton repels every other proton.

While this repulsive force acts to push the protons apart, it is essential to note that it is much weaker than the strong nuclear force at short distances. However, as one moves further away from the nucleus, the influence of the strong nuclear force diminishes, and the electrical force becomes more noticeable.

The interaction between protons and neutrons is essential for the stability of atomic nuclei. Neutrons, which are electrically neutral, do not partake in electrical forces. Instead, they serve another critical role. They help mediate the attractive strong nuclear force throughout the nucleus.

The binding energy provided by the strong nuclear force involves all nucleons (protons and neutrons), but the neutrons' role is particularly interesting. For one, they add to the attractive potential of the nucleus without adding repulsive electrical forces.

In essence, neutrons contribute significantly to balancing the forces within the nucleus. Their existence allows more protons to be packed together than would be otherwise possible if only the electrical force were at play. This interaction stabilizes the nucleus, enabling the diversity of elements we observe in nature.