A certain solid has a structure in which X atoms are located at the co – InterviewSolution

1.	A certain solid has a structure in which X atoms are located at the corners of the cubic cell, O at the edge centres and Y at the body centres. Then the formula of the cell is XaYbOc. If O atoms are missing from any two edge centres per unit cell, the formula is XxYyOz. Find the value of (a+b+c)+(x+y+z).
Answer» A certain solid has a structure in which $X$ atoms are located at the corners of the cubic cell, $O$ at the edge centres and $Y$ at the body centres. Then the formula of the cell is $X_{a} Y_{b} O_{c}$ . If $O$ atoms are missing from any two edge centres per unit cell, the formula is $X_{x} Y_{y} O_{z}$ . Find the value of $(a + b + c) + (x + y + z)$ .

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