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Select from each group of the species wh...

Select from each group of the species which has the smallest radius stating appropriate reason.
`P^(3+) , P^(4+) , P^(5+)`

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The ionic radius decreases as more electrons are ionized off that is as the valency increases so the correct order is `P^(5+) lt P^(4+) lt P^(3+)`
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