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

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

The Solid State

Solution:

The structural arrangement of coordination number $6$ is octahedral and its radius ratio is $0.414 - 0.732$. The example of octahedral is $KCl$ and $NaCl$.