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Which one of the following is correct order of the size

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a
I>I−>I+
b
I>I+>I−
c
I+>I−>I
d
I−>I>I+

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detailed solution

Correct option is D

The size of the cation is always smaller than that of its parent atom and size of the anion is always larger than that of its parent atom.∴  Size of the cation ∝1 magnitude of positive charge Size of the anion c magnitude of negative charge.Hence, the correct order of the size is I−>I>I+

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