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Question

Which of the following metals largely exist in their combined state?


  1. Au

  2. Al

  3. both a and c

  4. Na


Solution

The correct option is C

both a and c


Highly reactive metals like Na, Ca, Al all tend to react with moisture, oxygen or other chemical reagents and occur in their combined state. In other words, these reactive metals exist in the form of their compounds.

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