In compound atoms of element Y forms ccp lattice and those of element
In compound atoms of element Y forms ccp lattice and those of element X occupy 2/3rd of tetrahedral voids. What is the formula of the compound ?
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No. of Y atoms per unit cell in ccp lattice = 4
No. of tetrahedral voids = 2 × 4 = 8
No. of tetrahedral voids occupied by X = 2/3 × 8 = 16/3
Therefore, Formula of the compound = X16/3Y4
= X16Y12
= X4 Y3
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