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    Question

    Who conducted X-ray spectroscopic study of a large

    number of elements and showed that the frequency of X-rays emitted by an element is related to the atomic number, Z, rather than the atomic mass?
    A Dmitri Mendeleev Correct Answer Incorrect Answer
    B Johann Dobereiner Correct Answer Incorrect Answer
    C Lothar Meyer Correct Answer Incorrect Answer
    D Henry Moseley Correct Answer Incorrect Answer

    Solution

    The correct answer is D

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