JEE Main & Advanced Chemistry The Solid State / ठोस प्रावस्था Question Bank Topic Test - Solid State

A solid AB has NaCl structure. If the radius of action \[{{A}^{+}}\] is 170 pm, calculate the maximum possible radius of the anion \[{{B}^{-}}\]

A) 210.3 pm

B) 397.4 pm

C) 410.6 pm

D) 347.9 pm

Correct Answer: C

Solution :

[c] For NaCl type structure \[\frac{{{r}_{{{C}^{+}}}}}{{{r}_{{{A}^{-}}}}}=0.414-0.737\]

For maximum possible radius of \[{{B}^{-}}\]

\[\frac{{{r}_{{{A}^{+}}}}}{{{r}_{{{B}^{-}}}}}=0.414\] \[{{r}_{{{B}^{-}}}}=\frac{170}{0.414}=410.6\]