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which of the following statemets is ...

which of the following statemets is not true about the hexagonal close packing ?

A

The coordination number is 12

B

It has 74% packing efficiency

C

Tetrahedral voids of the second layer are covered by the spheres of the third layer

D

In this arrangement spheres of the fourth layer are exactly aligned with those of the first layer

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The correct Answer is:
D
Properties of ionic solid
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