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A binary soli...

Question

A binary solid (A⁺B^-) has a zinc blend structure with B^- ion constituting the lattice and A⁺ion occupying the 25% tetrahedral voids. The formula of solid is _________

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Solution

Let no. of unit cells = n.Then , no of Tetrahedral voids = 2n . 25% ot this = 2n/4 = n/2.
So the required formula is A_n/2B_n or AB₂ .

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