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JEE Main Chemistry question

ChemistryClassification of Elements and Periodicity in PropertiesJEE Main

The correct order of radii is [WB-JEE 2007]

Answer: (B)

Solution

and are isoelectronic (10 electrons each); as nuclear charge decreases from F (Z=9) to O (Z=8) to N (Z=7), effective nuclear attraction weakens and radius increases, giving , matching option (B). The other

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Question ID VK-133197