A solid is made of two elements X & Z .the atoms Z are in CCP arrangement while atom X occupy all tetrahedral sites . what is the formula of the compound?

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Solution

CCP arrangement has 4 atoms

Atom Z are in CCP arrangement so total atom of Z = 4

Tetrahedral sites are double of total atom present in the unit cell

So tetrahedral sites present = 2*4 = 8

X occupy tetrahedral sites so total number of X present = 8

Formula of compound will be X₈Z₄ = X₂Z

Answer : X₂Z

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A solid is made of two elements X & Z .the atoms Z are in CCP arrangement while atom X occupy all tetrahedral sites . what is the formula of the compound?

CCP arrangement has 4 atoms Atom Z are in CCP arrangement so total atom of Z = 4 Tetrahedral sites are double of total atom present in the unit cell So tetrahedral sites present = 2*4 = 8 X occupy tetrahedral sites so total number of X present = 8 Formula of compound will be X8Z4 = X2Z Answer : X2Z