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  5. Periodic Classification of Elements

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

  • question_answer
    The period number of an element in the periodic table gives the:

    A) Number of valence electrons in the outermost shell.

    B) Number of shells in an atom of the element.

    C) Atomic number of the element

    D) All the above

    E) None of these

    Correct Answer: B

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