In a hexagonal close packed (hcp) struct...

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`

B

`AltB`

C

`AgtB`

D

A is equal to the fraction in a simple cubic lattice

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The correct Answer is:

A

Fraction of the space occupied in c.c.p. and h.c.p. arrangement is the same.

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