What type of crystal structure from following has $52.36 \%$ packing efficiency?

What type of crystal structure from following has $52.36 \%$ packing efficiency?
  1. $\mathrm{FCC}$
  2. $\mathrm{BCC}$
  3. Hexagonal
  4. Simple cubic

Solution

$\mathrm{FCC} \rightarrow 74 \% \quad \mathrm{BCC} \rightarrow 68 \%$ Hexagonal $\rightarrow 74 \% \quad$ Simple cubic $\rightarrow 52.36 \%$

Asked in: MHT CET 2021 (20 Sep Shift 2)

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