An element X combines with oxygen to form an oxide XO. This oxide is electrically conducting. Write the formula of the compound formed when X reacts with chlorine.
  1. XCl3
  2. XCl
  3. XCl2
  4. XCl5


Correct Answer: (c) XCl2 

Explanation: An element X combines with oxygen to form an oxide XO. Hence, its valency is 2. This oxide is electrically conducting therefore it must be an oxide of a metal. Therefore, the formula of the compound formed when X reacts with chlorine is XCl2.

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Updated on: 10-Oct-2022

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