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NEET2013ChemistrySolid StateActual

KF has ccp structure. How many F ⁻ ions and octahedral voids are there in this unit cell respectively?

Options

  1. A4 and 4
  2. B4 and 8
  3. C8 and 4
  4. D6 and 6

Correct answer

A. 4 and 4

Step-by-step solution

In fcc structure, there are 4 ~F ⁻ ions in the packing and hence 4 octahedral voids.

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