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Assertion.Hexagonal close packing is more closely packed than cubic close packing. Reason.Hexagonal close packing has a coordination number of 12 whereas cubic close packing hasa coordination number of 8

Answer»

If both assertion and REASON are true, and reason is the true explanation of the assertion.
If both assertion and reason are true, but reason is not the true explanation of the assertion.
If assertion is true , but reason is FALSE
If both assertion and reason are false.

SOLUTION :Correct A . Hexagonal close packing and cubic close packing are EQUALLY close packed (space OCCUPIED =74%)
Correct R. Both have a coordination number of 12.


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