A) \[3.59\,\overset{\text{o}}{\mathop{\text{A}}}\,\]
B) \[2.54\,\overset{\text{o}}{\mathop{\text{A}}}\,\]
C) \[1.27\,\overset{\text{o}}{\mathop{\text{A}}}\,\]
D) \[5.08\,\overset{\text{o}}{\mathop{\text{A}}}\,\]
Correct Answer: A
Solution :
The value of lattice constant \[a=\frac{4r}{\sqrt{2}}\] \[=2\sqrt{2}\times r\] \[=2\sqrt{2}\times 2.54/2\] \[=3.59\text{ }A\]
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