Three elements X, Y and Z crystallise in a cubic solid with X at corners, Y at body centre and Z at the face centres of the cube, then the formula of the solid is
A
XYZ3
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B
X3YZ
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C
XYZ
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D
XY3Z
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Solution
The correct option is A
XYZ3
There is one atom of X , one atom of Y and 3 atoms of Z.