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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

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The correct Answer is:
C
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