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Sodium metal crystallises in body centred cubic lattic with cell edge `4.29 Å` .What is the radius of sodium atom ?A. `1.857 xx 10^(-8) cm`B. `2.371 xx 10^(-7) cm`C. `3.817 xx 10^(-8) cm`D. `9.312 xx 10^(-8) cm` |
Answer» Correct Answer - a Radius of Na (if bcc lattile) `= sqrt(3a)/(4) = (sqrt(3) cc 4.29)/(4)` `= 1.8574 Å = 1.8574 xx 10^(-8)cm` |
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