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Identical spheres are undergoing two-dim...

Identical spheres are undergoing two-dimensinal packing in squre close packing and hexagonal close packing. Which is correct regarding the spheres?

A

The ratio of coordination number for a sphere is first case to that in second case is 2:3

B

Packing in second case is more effective.

C

Packing in first case is more effective.

D

The stacking of layer on first type packing produces simple cubic structure.

Text Solution

Verified by Experts

In square close packing CN=4 whereas in hcp,
CN (2D)=6, so, the ratio is 2:3.
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