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A solid A^(o+)B^(ɵ) has NaCl-type close-...

A solid `A^(o+)B^(ɵ)` has `NaCl`-type close-packed structure. If the anion has a radius of `250` pm, what should be the ideal radius for the cation? Can a cation `C^(o+)` having radius of `180` pm be slipped into the tetrahedral site of the crystal `A^(o+)B^(ɵ)`? Give reason for your answer.

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The correct Answer is:
103.4 pm,No
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A solid A^(+)B^(-) has NaCl -type close-packed structure. If the anion has a radius of 250 pm, what should be the ideal radius for the cation? Can a cation C^(+) having radius of 180 pm be slipped into the tetrahedral site of the crystal A^(+)B^(-) ? Give reason for your answer.

A solid A^(o+)B^(ɵ) has NaCl -type close-packed structure. If the radius of the cation is 90 pm, calculate the probable range of the radius of the anion.

(a) If the close packed cations in an AB type solid have a radius of 75 pm, what would be the maximum and minimum sizes of the anions filling the voids ? (b) Br^(-) ions form a close packed structure. If the radius of Br^(-) ion is 195 pm, calculate the radius of the cation that just fits into the tetrahedral hole. Can a cation A^(+) having a radius of 82 pm be slipped into the octahedral hole of the crystal A^(+)Br^(-) ?

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