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Question

Assertion :PCl5 and PCl4 are thermally unstable Reason: They produce same gas on thermal decomposition

A
Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
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B
Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
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C
Assertion is correct but Reason is incorrect
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D
Both Assertion and Reason are incorrect
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Solution

The correct option is B Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
They both are thermally unstable as they are easily oxidisable substance.

PCl5PCl3+Cl2

PCl4PCl2+Cl2

Thus, Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion

Hence, the correct option is B

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