The packing efficiency of simple cubic (sc), | vedclass

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Question

(A) The packing efficiency is the percentage of total space occupied by the constituent particles in a crystal lattice.For simple cubic $(sc)$ lattice

Vedclass · Accepted Answer

$sc < bcc < ccp$

Vedclass · Answer

(A) The packing efficiency is the percentage of total space occupied by the constituent particles in a crystal lattice.For simple cubic $(sc)$ lattice, the packing efficiency is $52.4 \%$.For body-centred cubic $(bcc)$ lattice, the packing efficiency is $68 \%$.For cubic close packing $(ccp)$ or face-centred cubic $(fcc)$ lattice, the packing efficiency is $74 \%$.Therefore, the order of packing efficiency is $sc < bcc < ccp$.

The packing efficiency of simple cubic $(sc)$, body-centred cubic $(bcc)$ and cubic close packing $(ccp)$ lattices follow the order:

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