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A stable nucleus contains many protons very close to each other, all positively charged. Why do the protons not fly apart due to mutual Coulomb repulsion?

A) The neutrons in the nucleus shield the protons from each other.

B) Attractive nuclear forces in the nucleus counteract the effect of the Coulomb forces.

C) There are an equal number of electrons in the nucleus which neutralize the protons.

D) The Coulomb force does not operate within nuclei.

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