An ionic compound \( \mathrm{AB} \) has \( \mathrm{ZnS} \) type str...

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An ionic compound \( \mathrm{AB} \) has \( \mathrm{ZnS} \) type structure. If the radius \( \mathrm{A}^{+} \)is \( 22.5 \mathrm{pm} \), then the ideal radius of \( \mathrm{B}^{-} \) would be :-
(A) \( 54.35 \mathrm{pm} \)
(B) \( 100 \mathrm{pm} \).
(C) \( 145.16 \mathrm{pm} \)
(D) none of these
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