In a compound, atoms of element \( Y \) form ccp lattice and those of element \( X \) occupy \( ...

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In a compound, atoms of element \( Y \) form ccp lattice and those of element \( X \) occupy \( 2 / 3^{\text {rd }} \) of tetrahedral voids. The formula of the compound will be -
(A) \( \mathrm{X}_{4} \mathrm{Y}_{3} \)
(B) \( \mathrm{X}_{2} \mathrm{Y}_{3} \)
(C) \( \mathrm{X}_{2} \mathrm{Y} \)
(D) \( \mathrm{X}_{3} \mathrm{Y}_{4} \)
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