A compound formed by elements X and Y crystal | vedclass

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(A) The number of $X$ atoms at the corners of the cube is $8$. Since each corner atom contributes $\frac{1}{8}$ to the unit cell, the total number of

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$XY$

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(A) The number of $X$ atoms at the corners of the cube is $8$. Since each corner atom contributes $\frac{1}{8}$ to the unit cell, the total number of $X$ atoms per unit cell is $8 	imes \frac{1}{8} = 1$.The number of $Y$ atoms at the body centre is $1$. Since the body-centered atom is entirely within the unit cell, the total number of $Y$ atoms per unit cell is $1$.Therefore, the ratio of $X:Y$ is $1:1$, and the formula of the compound is $XY$.

$A$ compound formed by elements $X$ and $Y$ crystallises in a cubic structure, where $X$ atoms are at the corners of a cube and $Y$ atoms are at the body centre. The formula of the compound is:

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