NEET UG CHEMISTRY MCQ: CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES

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The correct order of ionic radii for the ions,

{P^{3 - }},\,{S^{2 - }},\,C{a^{2 + }},\,{K^ + },\,C{l^ - }

View answer and explanation

Correct option: A

{P^{3 - }} > {S^{2 - }} > C{l^ - } > {K^ + } > C{a^{2 + }}

Option A (

{P^{3 - }} > {S^{2 - }} > C{l^ - } > {K^ + } > C{a^{2 + }}

) is correct because for isoelectronic species, ionic radii decrease with increasing nuclear charge.

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