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10th Class Science Periodic Classification of Elements Question Bank Periodic Classification of Elements

  • question_answer
    Arrange the given elements in the decreasing order of their atomic radii: Mg, Ca, Be, Sr, Ba

    A) \[Sr>\,Ba>\,Ca>\,Mg>\,Be\]

    B) \[Ba>\,Sr>\,Ca>\,Mg>\,Be\]

    C) \[Be>\,Sr>\,Ba>\,Mg>\,Ca\]

    D) \[Ba>\,Sr>\,Ca>\,Be>\,Mg\]

    E) None of these

    Correct Answer: B

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