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Q.

Among the following, the correct order of the size is

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a

Na < Mg < K

b

P < C𝑙 < Br

c

$O^{- 2} < F^{-} < {Mg}^{+ 2}$

d

$I^{-} > I > I^{+}$

answer is D.

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Detailed Solution

The radius of anion is always larger than parent atom

The radius of anion is always larger than parent atom

Therefore, the correct order of size of ions is $I^{-} > I > I^{+}$

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Among the following, the correct order of the size is