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JEE Main2011ChemistrySolid StateActual

In a face centred cubic lattice, atom A occupies the corner positions and atom B occupies the face centre positions. If one atom of B is missing from one of the face centred points, the formula of the compound is

Options

  1. AAB ₂
  2. BA₂ B₃
  3. CA ₂ ~B ₅
  4. DA₂ B

Correct answer

C. A ₂ ~B ₅

Step-by-step solution

Effective no.of A atoms = 1 8 8=1 Effective no.of B atoms = 1 2 5 (One is missing) = 5 2 Therefore formula is A₁ B_ 5 2 =A₂ B₅

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