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Why do stable nuclei never have more pro...

Why do stable nuclei never have more protons than neutrons ?

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Because protons are positively charged and repel one another electrically . This repulsion becomes so great in nuclei with more than 10 protons or so that an excess of neutrons which produce only attractive forces is required for stability.
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Knowledge Check

  • Heavy stable nuclei have more neutrons than protons. This is because of the fact that

    A
    neutrons are heavier than protons
    B
    electrostatic forces between protons are repulsive
    C
    neutrons decay into protons through beta decay
    D
    nuclear forces between neutrons are weaker than that between protons

  • Heavy stable nucleus have more neutrons than protons. This is because of the fact that

    A
    neutrons are heavier than protons
    B
    electrostatic force between protons are repulsive.
    C
    neutrons decay into protons through beta decay.
    D
    nuclear forces between neutrons are weaker than that between protons.

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