A) density is \[6.09\,gm/ml\]
B) Radius of \[N{{a}^{+}}\]on is 80 pm
C) Distance between two closest \[N{{a}^{+}}\] ion is 282 pm
D) Radius ratio is between \[0.732\] to 1
Correct Answer: D
Solution :
[a] Density \[=\frac{M[NaCl]\times 4}{6\times {{10}^{23}}\times {{a}^{3}}}\] [b] \[a=2[{{R}_{N{{a}^{+}}}}+{{R}_{C{{l}^{-}}}}]\] [c] Distance between two closest \[N{{a}^{+}}\] ion is \[=\frac{a}{\sqrt{2}}\] [d] Radius ratio is 0.6
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