Question

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

• A. $bcc<ccp<sc$
• B. $ccp<bcc<sc$
• C. $sc<ccp<bcc$
• D. $sc<bcc<ccp$

Answer 1

Answer: (D)

$sc<bcc<ccp$

Correct order will be,

$sc<bcc<ccp$

$sc=52.4$%

$bcc=68$%

$ccp=74$%

Thus answer is option D.