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J & K CET Engineering J and K - CET Engineering Solved Paper-2014

  • question_answer
    Mass number of an atom is the sum of

    A)  number of protons + number of neutrons + number of electrons

    B)  number of protons + number of neutrons

    C)  number of protons + number of electrons

    D)  number of electrons + number of neutrons

    Correct Answer: B

    Solution :

     Mass number of an atom is the sum of nucleons, i.e., the sum of number of protons and that of neutrons.


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