The force that causes the protons in an atom to be attracted to one another is Strong nuclear.
What is nuclear force?
Nuclear force is a force that acts between the protons and neutrons of atoms.
Neutrons and protons, both nucleons, are affected by the nuclear force almost identically and it is responsible for the attraction of protons in an atoms.
Thus, the force that causes the protons in an atom to be attracted to one another is Strong nuclear.
Learn more about Strong nuclear here: https://brainly.com/question/8695581
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