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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.
- XCl3
- XCl
- XCl2
- 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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