In the nuclei of atoms there are positively charged particles – protons and neutrons. It is known that charges of the same name repel.

In the nuclei of atoms there are positively charged particles – protons and neutrons. It is known that charges of the same name repel. Why do the particles of the nucleus not scatter, but are held firmly enough in the nucleus?

In total, four main types of interaction are considered in physics: strong (nuclear), weak, electromagnetic and gravitational.
Nuclear interaction is the shortest and strongest type of field. It is precisely these forces that act between the particles of the nucleus, which exceed the electromagnetic forces. It is thanks to these forces that the core exists. But the radius of action of nuclear forces is approximately equal to the size of the nucleus. Therefore, at large distances, the forces of electrical repulsion work, which are much less than the forces of nuclear attraction.