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in which of the following structures c...

in which of the following structures coordination number for cations and anions in the packed structure will be same ?

A

`CI^-` ion form fee lattice and `Na^+` ions occupy all octahedral voids of the unit cell.

B

`Ca^(2+)` ions form fee lattice and r ions occupy all the eight tetrahedral voids of the unit cell.

C

`O^(2-)` ions form fee lattice and `Na^+` ions occupy all the eight tetrah edral voids of the unit cell.

D

`S^(2-)` ions form fee lattice and `Zn^(2+)` ions go into alternate tetrahedral voids of the unit cell.

Text Solution

Verified by Experts

The correct Answer is:
A
NaCl unit cell has a fee structure of `Cl^-` ions, and `Na^+` ions occupy octahedral voids. The radius ratio of 0.524 for NaCl suggests an octahedral void.
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