If the radius ratio is in the range of 0.732 | vedclass

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(D) The coordination number of an ionic crystal is determined by the radius ratio $(r_+ / r_-)$.For a radius ratio in the range of $0.225 - 0.414$,the

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$8$

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(D) The coordination number of an ionic crystal is determined by the radius ratio $(r_+ / r_-)$.For a radius ratio in the range of $0.225 - 0.414$,the coordination number is $4$ (tetrahedral).For a radius ratio in the range of $0.414 - 0.732$,the coordination number is $6$ (octahedral).For a radius ratio in the range of $0.732 - 1.000$,the coordination number is $8$ (cubic).

If the radius ratio is in the range of $0.732 - 1.000$,then the coordination number will be

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