A) \[8.734\overset{o}{\mathop{\text{A}}}\,\]
B) \[5.834\overset{o}{\mathop{\text{A}}}\,\]
C) \[5.783\overset{o}{\mathop{\text{A}}}\,\]
D) \[8.153\overset{o}{\mathop{\text{A}}}\,\]
Correct Answer: C
Solution :
Molecular mass of\[CuCl=99\] \[Z=4\]for face-centred cubic cell from the formula Density\[=\frac{Z\times M}{V\times {{N}_{A}}}=\frac{4\times 99}{{{a}^{3}}\times 6.023\times {{10}^{23}}}\] Or \[3.4=\frac{4\times 9}{{{a}^{3}}\times 6.023\times {{10}^{23}}}\] Or \[a=5.783\times {{10}^{-8}}cm=5.783\overset{o}{\mathop{\text{A}}}\,\]
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