Solid State Question 63
Question: A solid AB has NaCl structure. If the radius of action $ {{A}^{+}} $ is 170 pm, calculate the maximum possible radius of the anion $ {{B}^{-}} $
Options:
A) 210.3 pm
B) 397.4 pm
C) 410.6 pm
D) 347.9 pm
Show Answer
Answer:
Correct Answer: C
Solution:
[c] For NaCl type structure $ \frac{{r _{{{C}^{+}}}}}{{r _{{{A}^{-}}}}}=0.414-0.737 $ For maximum possible radius of $ {{B}^{-}} $ $ \frac{{r _{{{A}^{+}}}}}{{r _{{{B}^{-}}}}}=0.414 $
$ {r _{{{B}^{-}}}}=\frac{170}{0.414}=410.6 $
BETA
