Solid AB has a rock salt type structure. If the radius of the cation is \( 200 \mathrm{pm} \), t...

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Solid AB has a rock salt type structure. If the radius of the cation is \( 200 \mathrm{pm} \), then what is the maximum possible radius of the anion?
(a) \( 483.1 \mathrm{pm} \)
(b) \( 273.6 \mathrm{pm} \)
(c) \( 200 \mathrm{pm} \)
(d) \( 400 \mathrm{pm} \)
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