Chemistry | VITEEE 2018 | Discussion Page

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In a compound, atoms of element Y form ccp lattice and those of element X occupy 2/3^rd of tetrahedral voids. The formula of the compound will be

$X_{4}Y_{3}$

$X_{2}Y_{3}$

$X_{2}Y$

$X_{3}Y_{4}$

Option A

From the given data, we have Number of Y atoms in a unit cell = 4

Number of X atoms in a unit cell = 8×2/3 = 16/3

From the above we get the formula of the compound as X_16/3Y₄ Or X₄ Y₃

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