JEE CHEMISTRY MCQ: CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES

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Which of the following arrangements represents the increasing order of ionic radii of the given species,

{O^{ - 2}},\,\,{S^{2 - }},\,\,{N^{3 - }},\,\,{P^{3 - }}

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Correct option: A

{O^{2 - }} < {N^{3 - }} < {S^{2 - }} < {P^{3 - }}

Option A (

{O^{2 - }} < {N^{3 - }} < {S^{2 - }} < {P^{3 - }}

) is correct because ionic radii increase down a group and for isoelectronic species, radii decrease with increasing nuclear charge.

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