For an ionic crystal of the general formula AX and coordination number 6, the value of radius ratio will be

  1. A

    Greater than 0. 73

  2. B

    In between 0.73 and 0.41

  3. C

    In between 0.41 and 0.22

  4. D

    Less than 0.22NaCl

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    Solution:

    The structural arrangement of co-ordination number '6' is octahedra1 and its radius ratio is 0.4140.732. The example of octahedral is KCl and NaCl.

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