CMC Medical CMC-Medical Ludhiana Solved Paper-2007

  • question_answer
    The nucleus of an atom is made up of X protons and Y neutrons. For the most stable and abundant nuclei

    A)  X and Y both are even

    B)  X and Y both are odd

    C)  X is even and Y is odd.

    D)  X is odd and Y is even

    Correct Answer: A

    Solution :

                    Nuclei which are most stable and abundant have even number of protons and neutrons because their spins tend to pair up.


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