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      Question

      Metalloids

      are
      A Alloys of alkali metals with other metals Correct Answer Incorrect Answer
      B Colloids of metals Correct Answer Incorrect Answer
      C Elements having some properties of both metals and non-metals Correct Answer Incorrect Answer
      D Metals heavier than lead Correct Answer Incorrect Answer

      Solution

      Metalloids, such as boron, silicon, and arsenic, exhibit properties that are intermediate between metals and non-metals. For example:

      • They can conduct electricity like metals but are brittle like non-metals.
      • They are often used in semiconductors. Options (a), (b), and (d) are incorrect because they do not describe metalloids.

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