In the crystal `A^(2+)B^(2-)`, having anions in the face-centred cubic packing if the radius of the anion is `1.84 Å` ideal radius of the cation prese
In the crystal `A^(2+)B^(2-)`, having anions in the face-centred cubic packing if the radius of the anion is `1.84 Å` ideal radius of the cation present in the tetrahedral hole will be
A. `0.225 Å`
B. `0.414 Å`
C. `0.732 Å`
D. none of these
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Correct Answer - B
Radius of tetrahedral hole `=0.225xx` R
`=0.225xx1.84 Å =0.414 Å`.
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