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In hcp structure, the packing fraction i...

In hcp structure, the packing fraction is

A

0.68

B

0.74

C

0.5

D

0.54

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Knowledge Check

  • In a hexagonal close packed (hcp) structure of spheres, the fraction of the volume occupied by the sphere is A.In a cubic close packed structure, the fraction is B. The relation for A and B is

    A
    `A=B`
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    `AgtB`
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    A = B
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  • Assertion : A crystal having fcc structure is more closely packed then a crystal having bcc structure Reason: packing fraction for fcc structure id double than that of bcc structure

    A
    If both assertion and reason are true and the reason is the correct explanation of the assertion
    B
    If both assertion and reason are true but reason is not the correct explanation of the assertion
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