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प्रश्न
Assertion: The packing efficiency is maximum for the fcc structure.
Reason: The cordination number is 12 in fcc structures.
विकल्प
Assertion and reason both are correct statements and reason is correct explanation for assertion.
Assertion and reason both are correct statements but reason is not correct explanation for assertion.
Assertion is correct statement but reason is wrong statement.
Assertion is wrong statement but reason is correct statement.
उत्तर
Assertion and reason both are correct statements but reason is not correct explanation for assertion.
Explanation:
In fcc unit cell, there is cep arrangement with packing efficiency of 74.01% which is maximum. In ccp arrangement, coordination number is 12.
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