1.

(a) Compare the packing efficiency of square close packing, hexagonal close packing and cubic close packing. (b) Give the values of packing efficiency in (i) hcp or ccp and (ii) body-centred cubic crystals.

Answer»

Solution :(a) PACKING efficiencies of HCP and ccp are identical, but the packing efficiency of square close packing is smaller.
(B) Packing efficiency of hep or ccp `= 74%`
Packing efficiency of body-centred CUBIC `= 68%`


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