Solid State Question 288
Question: The ionic radii of $ {{X}^{+}} $ and $ {{Y}^{-}} $ ions are 146 and 216 pm respectively. The probable type of structure shown by it is
Options:
A) $ CsCl $ type
B) Rock salt type
C) Zinc blende type
D) $ CaF_2 $ type
Show Answer
Answer:
Correct Answer: B
Solution:
[b] The radius ratio $ \frac{{r _{+}}}{{r _{-}}}=\frac{146}{216}=0.675 $ It lies between $ 0.414-0.732 $ . Hence, it exhibits rock salt type structure.
BETA
