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The compound formed by elements X and Y crystallizes in cubic structure in which X atoms are at the corners of the cube and Y atoms are at the face centre . The formula of the compound is


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No. of X-atoms per unit cell = $\large\frac{8}{8}$
No. of Y-atoms per unit cell = $\large\frac{6}{2}$
Thus the formula is $XY_3$
Hence answer is (c)
answered Feb 28, 2014 by sharmaaparna1

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