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An ionic compound has a unit cell consisting of A ions at the corners of a cube and B ions on the centers of the faces of the cube .The empirical formula for this compound would beA. ABB. `A_(2)B`C. `AB_(3)`D. `A_(3)B`

Answer» Correct Answer - C
A ions are at eight corners of the cube. Therefore
the no. of A ions in the unit cell `=(8)/(8)=1.` B ions are at the face centre of six faces. Therefore, its share in the unit cell `=(6)/(2)=3` . The formula is `AB_(3)` .


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