1.

Which of the following lattices has the highest packing efficiency (i) simple cubic (ii) bodycentred cubic and (iii) hexagonal close-packed lattice ?

Answer»

Solution :(i) Simple CUBIC : 52% PACKING efficiency
(II) Body-centred cubic : 68% packing efficiency
(iii) Hexagonal close packing : 74% packing efficiency.
Hence, Hexagonal close-packed structure is maximum efficient.


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