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  4. The correct order of the size of iodine species, I, I- and I+ is

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Q. The correct order of the size of iodine species, I, $I^-$ and $I^+$ is

The p-Block Elements - Part2

Solution:

$I^- > I > I^+$. As the number of electron decreases (but proton number remains same) so effective nuclear charge increases and so size decrease