A) \[6.29g/c{{m}^{3}}~\]
B) \[2.23\text{ }g/c{{m}^{3}}\]
C) \[4.45\text{ }g/c{{m}^{3}}\]
D) \[8.90\text{ }g/c{{m}^{3}}\]
Correct Answer: B
Solution :
Density of copper \[=\frac{Z\times M}{{{a}^{3}}\times {{N}_{0}}\times {{10}^{-30}}}g\,c{{m}^{-3}}\] Here \[a=362Pm,\] \[{{N}_{0}}=6.09\times {{10}^{23}}\] \[Z=12\] in \[FCC,\] \[M=63.546\] \[Density=\frac{12\times 63.546}{{{(362)}^{3}}\times 6.09\times {{10}^{23}}\times {{10}^{-30}}}\] \[=2.23g\,c{{m}^{3}}\]
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