In a cubic structure of diamond which is made from X and Y, where X atoms are at the corners of the cube and Y at the face centres of the cube. The molecular formula of the compound is:

X_{2} Y

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X_{3} Y

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X Y_{2}

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X Y_{3}

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Solution

The correct option is D $X Y_{3}$
For a cubic structure,
Number of atoms (X) at each corner per unit cell
$\frac{1}{8} \times 8 = 1 a t o m$

at each face $(Y) = 6 \times \frac{1}{2} = 3 a t o m s$

$∴$ The molecular formula of the compound is $X Y_{3}$

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In a cubic structure of diamond which is made from X and Y, where X atoms are at the corners of the cube and Y at the face centres of the cube. The molecular formula of the compound is:

The correct option is D XY3For a cubic structure,Number of atoms (X) at each corner per unit cell 18×8=1atomat each face (Y)=6×12=3atoms∴ The molecular formula of the compound is XY3

The correct option is D $X Y_{3}$
For a cubic structure,
Number of atoms (X) at each corner per unit cell
$\frac{1}{8} \times 8 = 1 a t o m$

at each face $(Y) = 6 \times \frac{1}{2} = 3 a t o m s$

$∴$ The molecular formula of the compound is $X Y_{3}$