1. Tardigrade
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  3. Chemistry
  4. Which of the following is the smallest anion?

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Q. Which of the following is the smallest anion?

J & K CETJ & K CET 2002

Solution:

Solution The size of ion decreases in a period from left to right and increases on moving from top to bottom in a group. Hence, the order of ionic radii is as- Anion:
$O^{2-} < Cl^{-} < S^{2-} < B r^{-}$lonic radii: $142\, pm\, 181\, pm\, 184\, pm\, 196\, pm$