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AIIMS2014ChemistrySolid State

A forms h c p lattice and B are occupying 1 / 3^ rd of tetrahedral voids, then the formula of compound is

Options

  1. AA B
  2. BA₃ B₂
  3. CA₂ B₃
  4. DA B₄

Correct answer

B. A₃ B₂

Step-by-step solution

Let no. of atoms of A used in close packing =n Number of tetrahedral voids =2 n Number of atoms of B= 1 3 2 n= 2 3 nA: B=n: 2 3 n=3: 2 Formula of the compound =A₃ B₂

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