A) 174pm
B) 158pm
C) 142pm
D) 126pm
Correct Answer: B
Solution :
For bcc structure Interionic distance \[={{r}^{+}}+{{r}^{-}}=\frac{\sqrt{3}}{2}a\] (a = edge length) \[r_{NH_{4}^{+}}^{+}+r_{C{{l}^{-}}}^{-}=\frac{\sqrt{3}}{2}a\] \[r_{NH_{4}^{+}}^{+}+180=\frac{\sqrt{3}}{2}\times 390\] \[r_{NH_{4}^{+}}^{+}=338pm-180pm=158pm\]You need to login to perform this action.
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