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If neutrons exert only attractive force, why don't we have a nucleus containing neutrons alone?

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Why must heavy stable nucleus contain more neutrons than protons ?

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Knowledge Check

  • STATEMENT-I: It is easy to remove a proton from ._(20)^(40)Ca nucleus as compared to a neutron. STATEMENT-II: Inside nucles neutrons are acted on only by attractive forces but protons are also acted on by repulsive forces.

    A
    Statement-1 is True, Statement-2 is Ture, Statement-2 is correct explanation for Statement-2
    B
    Statement-1 is Ture, Statement-2 is True, Statement-2 is NOT a correct explanation for Statement-1.
    C
    Statement-1 is True, Statement -2 is False
    D
    Statement-1 is False, Statement-2 is True.

  • Highly energetic electrons are bombarded on a target of an element containing 30 neutrons. The ratio of radii of nucleus to that of Helium nucleus is 141//3 . The atomic number of nucleus will be.

    A
    25
    B
    26
    C
    56
    D
    30

  • Statement 1: When a beam of highly energetic neutrons is incident on a tungsten target, no X-rays will be produced. Statement 2: Neutrons do not exert any electrostatic force on electrons or nucleus of an atom.

    A
    Statement-1 is true, Statement-2: is true, Statement-2 is a correct explanation for Statement-1.
    B
    Statement-1 is true, Statement-2: is true, Statement-2 is NOT a correct explanation for Statement-1.
    C
    Statement-1 is true but statement-2 is false
    D
    Statement-1 is false, Statement-2 is true

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    Why heavy stable nucleus must contain more neutrons than protons?

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    Why didn't Valli want to have a look at the sights alone?

    Which of the following assertions are correct? (i) A neutron can decay to a proton only inside a nucleus (ii) A proton can change to a neutron only inside a nucleus (iii) An isolated neutron can change into a proton (iv) An isolated proton can change into a neutron

    Among gravitational, electrostatic and nuclear forces, the two attractive forces between two neutrons are

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