1.

For an ionic crystal of the general formula \[AX\] and coordination number 6, the value of radius ratio will be [MP PMT 1993]

A.                 Greater than 0.73
B.                 In between 0.73 and 0.41
C.                 In between 0.41 and 0.22
D.                 Less than 0.22
Answer» C.                 In between 0.41 and 0.22


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