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Ambidentate Ligands

Assertion :Th...

Question

Assertion :The entropies of $C O, N O, N_{2} O, {C l}_{2} (s)$ are not zero at absolute zero. Reason: These are exceptions to III law of thermodynamics.

Read the above assertion and reason and choose the correct option regarding it.

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

Assertion is incorrect but Reason is correct

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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
The entropies of $C O, N O, N_{2} O, {C l}_{2} (s)$ are not zero at absolute zero.
As these compounds do not exist in the form of perfectly crystalline solids and do not have perfect order of the constituent particles.
These are exceptions to III law of thermodynamics .
Thus both Assertion and Reason are correct but Reason is not the correct explanation for Assertion

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