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The ionic radii of A^(+) and B^(-) ions ...

The ionic radii of `A^(+) and B^(-)` ions are `0.98 xx 10^(-10) and 1.81 xx 10^(-10) m` .The coordinatyion number of each ion in `AB` is

A

8

B

2

C

6

D

4

Text Solution

Verified by Experts

The correct Answer is:
C
`(r_(+))/(r_(-)) = (0.98 xx 10^(-10)m)/(1.81 xx 10^(-10)m) = 0.54`
Since the radius ratio lies between `0.414 - 0.732`, its coordination number is 6 .
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