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

  • question_answer
    Which set of elements in the periodic table are called metalloids?

    A) Boron, silicon, germanium, arsenic

    B) Antimony, tellurium, polonium

    C) Aluminium, gallium, indium

    D) Both (a) and (b)

    Correct Answer: D

    Solution :

    The border line elements like boron, silicon, germanium, arsenic, antimony, tellurium and polonium have properties of both metals and non-metals. Hence, they are called metalloids.


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