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JEE Main Chemistry question

ChemistryClassification of Elements and Periodicity in PropertiesJEE Main

The ionic radii (Å) of and respectively are 2.60 and 1.40. The ionic radius of the isoelectronic ion would be

Answer: (B)

Solution

and are isoelectronic (10 electrons each), and ionic radius decreases as nuclear charge increases: C (Z=6) > N (Z=7) > O (Z=8). Since 's nuclear

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Question ID VK-133158