Assertion : The packing efficiency is maximum for the fcc structure. Reason : The cordination number is 12 in fcc structure.A. If both assertion and reason and true and reason is the correct explanation of assertion.B. If both assertion and reason and true and reason is not the correct explanation of assertion.C. If assertion is true but reason is false.D. If both assertion and reason are false.

Assertion : The packing efficiency is maximum for the fcc structure. R

1.	Assertion : The packing efficiency is maximum for the fcc structure. Reason : The cordination number is 12 in fcc structure.A. If both assertion and reason and true and reason is the correct explanation of assertion.B. If both assertion and reason and true and reason is not the correct explanation of assertion.C. If assertion is true but reason is false.D. If both assertion and reason are false.
Answer» Correct Answer - B In fcc unit cell, there is ccp arrangment with packing efficiency of 74.01% which is maximum. In ccp arrangment, coordination number is 12.

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