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### Asymmetry in p-p, n-n and n-p interactions

Why does the asymmetry exist between the proton-proton, neutron-neutron and neutron-proton strong interactions in the nucleus (which results in nuclei preferring equal numbers of neutrons and protons)?...
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### Strong nuclear force vs electrostatic repulsion between protons

Does the strong nuclear force balance the electrostatic repulsions between the protons or does it overcome the repulsion? I looked up on wikipedia and it says that the strong nuclear force is ...
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### Why is a nuclei with too many neutrons unstable? [duplicate]

I understand that a nuclei with too many protons is unstable as the electromagnetic repulsion becomes too strong to be balanced by the strong nuclear force. However in the case of there being too ...
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I know that when number of protons is high, the nucleus of atoms become unstable due to repulsive force and is radioactive. But why is that the nucleus also becomes unstable when there are too many ...
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### How (if at all) can the neutron-proton ratio of stable atoms be explained under the nuclear shell model? [duplicate]

To begin where I did with this question, I was originally wondering about why the neutron-proton ratio is close to 1 for stable nuclei. The answer to my original question (as far as I understand it) ...