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COMEDK2013ChemistrySolid State

The ratio of cationic radius to anionic radius in an ionic crystal is greater than 0.732 . Its coordination number is

Options

  1. A6
  2. B8
  3. C1
  4. D4

Correct answer

B. 8

Step-by-step solution

When the radius ratio is between 0.732-1.000 , the coordination number is 8 and arrangement is body centered cubic (bcc) packing.

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