Semiconductor Electronics Materials Devices And Simple Circuits Ques 29
29. Sodium has body centred packing. Distance between two nearest atoms is $3.7 $ $\AA$. The lattice parameter is
[2009]
(a) $4.3 $ $\AA$
(b) $3.0 $ $\AA$
(c) $8.6 $ $\AA$
(d) $6.8 $ $\AA$
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Answer:
Correct Answer: 29.(a)
Solution:
- (a) $d=\frac{\sqrt{3}}{2} a$
$3.7=\frac{\sqrt{3}}{2} a$
$a=\frac{2 \times 3.7}{\sqrt{3}}=4.3 $ $\AA$
BETA
