In a compound, atoms of element \( \mathrm{Y} \) form \( c c p \) l...

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In a compound, atoms of element \( \mathrm{Y} \) form \( c c p \) 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) \( \quad \mathrm{X}_{2} \mathrm{Y} \)
(d) \( \mathrm{X}_{3} \mathrm{Y}_{4} \)
\( \mathrm{W} \)
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