Lithium forms body centered cubic structure. The length of the side of its unit cell is 351 pm. Atomic radius of the lithium will be :

Engineering

Chemistry

Simple Face and Body Centered Unit Cells

Question

240 pm

300 pm

75 pm

152 pm

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For BCC : $\sqrt{3} a = 4 r$

$∴ r = \frac{\sqrt{3}}{4} \times 351 = 152 pm$