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Sodium metal crystallizes in body centred cubic lattice with the cell edge a=4.28Å. What is the radius of the sodium atom ?A. `1.857xx10^(-8)cm`B. `2.371xx10^(-7)cn`C. `3.817xx10^(-8)cm`D. `9.312xx10^(-7)cm`

Answer» Correct Answer - A
Radius of Na (in bcc lattice) `=(sqrt(3)a)/(4)=(sqrt(3)xx4.29)/(4)`
`=1.8574overset(@)A=1.8572xx10^(-8)` cm


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