A) 217pm
B) 210pm
C) 220pm
D) 205pm
Correct Answer: A
Solution :
[a] \[\rho =\frac{ZM}{{{N}_{A}}V}\] \[Z=\frac{\rho {{N}_{A}}V}{M}=\frac{2\times 6\times {{10}^{23}}\times {{(5\times {{10}^{-8}})}^{3}}}{75}\] Z= 2, which represents bcc structure \[\therefore ~r=\frac{\sqrt{3}}{4}a=\frac{\sqrt{3}}{4}\times 5=2.165\overset{{}^\circ }{\mathop{A}}\,=216.5pm\] \[\approx 217pm\]You need to login to perform this action.
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