The correct sequence which shows decreasing order of the io…

Chemistry Classification of Elements and Periodicity Atomic and Ionic Radius Single Correct MCQ

Published by: CGP EDU Academic Team

Published on: August 13, 2026

The correct sequence which shows decreasing order of the ionic radii of the elements is :

Al3+> Mg2+> Na+> F–> O2–

Na+> Mg2+> Al3+> O2–> F–

Na+> F–> Mg2+> O2–> Al3+

O2–> F–> Na+> Mg2+> Al3+

Text Solution

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The correct answer is:

For isoelectronic species, ionic radii .

So, correct order of ionic radii is 8O2– > 9F– > 11Na+ > 12Mg2+ > 13Al3+.

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