A) \[0.6\text{ }g/c{{m}^{3}}\]
B) \[1.2\text{ }g/c{{m}^{3}}\]
C) \[0.4\text{ }g/c{{m}^{3}}\]
D) \[1.0\text{ }g/c{{m}^{3}}\]
Correct Answer: A
Solution :
Density\[(\rho )=\frac{ZM}{{{a}^{3}}{{N}_{0}}}\] \[=\frac{2\times 23}{{{(5\times {{10}^{-8}})}^{3}}\times 6\times {{10}^{23}}}\] \[=0.6g/c{{m}^{3}}\]
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