MCQ Solution: Solid State
The most efficient packing of similar spheres is obtained in-
1) The simple cubic system and the body centered cubic system
2) The simple cubic system and the hexagonal close packed system.
3) The face centered cubic system and the hexagonal close packed system.
4) The body centered cubic system and the face centered cubic system.
The hexagonal close packing and the face-centred cubic system
have the closest packing as their packing efficiency is 74% and
thus (3) represent the correct solution.
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