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A crystal is made of particles X,Y and Z...

A crystal is made of particles X,Y and Z. X forms fcc packing. Y occupies all the octahedral voids of X and Z occupies all the tetrahedral voids of X.If the particles along one body diagonal are removed, then the formula of the crystal would be

A

`XYZ_(2)`

B

`X_(2)YZ_(2)`

C

`X_(6)Y_(4)Z_(5)`

D

`X_(5)Y_(4)Z_(8)`

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