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    Question

    Who discovered the phenomenon of

    radioactivity?
    A J.J. Thomson Correct Answer Incorrect Answer
    B Wilhelm R├╢ntgen Correct Answer Incorrect Answer
    C Henri Becquerel Correct Answer Incorrect Answer
    D Marie Curie Correct Answer Incorrect Answer

    Solution

    Henri Becquerel discovered radioactivity in 1896 while studying the properties of uranium salts. He observed spontaneous emissions of radiation without external stimuli, marking the first recorded discovery of radioactive decay.

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