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Railways General Science & Technology Structure of Atom / परमाणु संरचना Sample Paper Structure of Atom Sample Test Paper-14

  • question_answer
    Which of the following has the same atomic number and atomic weight?

    A)  Hydrogen         

    B)  helium

    C)  Oxygen

    D)  nitrogen

    Correct Answer: A

    Solution :

    [a] Atomic number of hydrogen = no. of protons = 1 Mass number of hydrogen = no. of protons + no. of neutrons = 1 + 0 = 0


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