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JEE Main Chemistry question

ChemistryClassification of Elements and Periodicity in PropertiesJEE Main

What is the correct decreasing order of ionic radii of following ions? [MP PET 2010]

Answer: (B)

Solution

These five species are isoelectronic (10 electrons each), so radius decreases as nuclear charge increases: N (Z=7) > O (Z=8) > F (Z=9) > Na (Z=11) > Mg (Z=12). This gives the

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Question ID VK-133165