A) 174 pm
B) 158 pm
C) 142 pm
D) 126 pm
Correct Answer: B
Solution :
[b] 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.
You will be redirected in
3 sec