For simple cubic crystal edge length is expressed as

For simple cubic crystal edge length is expressed as
  1. $\mathrm{a}=2 \mathrm{r}$
  2. $a=\frac{r}{2}$
  3. $a=\frac{r}{2}$
  4. $\mathrm{a}=\frac{\mathrm{r}}{\sqrt{2}}$

Asked in: MHT CET 2021 (24 Sep Shift 1)

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