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Ionic Compounds and Radius Ratios

If the value ...

Question

If the value of ionic radius ratio $(\frac{r_{c}}{r_{a}})$ is 0.52 in an ionic compound, the geometrical arrangement of ions in crystal is

A

Tetrahedral

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B

Planar

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C

Octahedral

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D

Pyramidal

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Solution

The correct option is C Octahedral
The value of ionic radius ratio is 0.52 which is between 0.414 – 0.732 then the geometrical arrangement of ions in crystal is octahedral.

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