MCQ
Choose one of the following in the order of increasing radii:
  • A
    $I ^{-}< I ^{+}< I$
  • B
    $I < I ^{+}< I ^{-}$
  • C
    $I ^{+}< I ^{-}< I$
  • $I ^{-}> I > I ^{+}$

Answer

Correct option: D.
$I ^{-}> I > I ^{+}$
(d) $I ^{-}>$I $>$I $^{+}$
Explanation: The size of the anion is greater than the size of the parent atom and the size of the cation. As the -ve charge of anion increases ionic radii increases due to a decrease in the effective nuclear charge and vice versa.

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