Crystallizes Body Centred Cubic Lattic|SolidStateJEEMain2023

JEE MAIN 2023

13-4-2023 S2

Question

Sodium metal crystallizes in a body centred cubic lattice with unit cell edge length of 4 Å. The radius of sodium atom is ____ × l0–1 Å (Nearest integer)

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Solution

Sol. $$ \begin{aligned} & \sqrt{3} \mathrm{a}=4 \mathrm{r} \\ & \sqrt{3} \times 4=4 \mathrm{r} \\ & \mathrm{r}=1.732 \mathrm{~A} \\ & =17.32 \times 10^{-1} \end{aligned} $$

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JEE Main

Chemistry

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