The set representing the correct order of ionic radii is

Chemistry Classification of Elements and Periodicity NTA Abhiyas Question Single Correct MCQ

Published by: CGP EDU Academic Team

Published on: August 11, 2026

Li + > Be 2+ > Na + > Mg 2+

Li + > Na + > Mg 2+ > Be 2+

Mg 2+ > Be 2+ > Li + > Na +

Na + > Li + > Mg 2+ > Be 2+

Text Solution

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The correct answer is:

Na + > Li + > Mg 2+ > Be 2+

2 + charge cation is smaller in size than 1 + charge cation due to more effective nuclear charge.

Na + > Li + (down the group)

Mg 2+ > Be 2+ (down the group)

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