Published by:
CGP EDU Academic Team
Published on: August 14, 2026
The ions which are arranged in correct order of increasing radii are:
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
B
Ionic size increases down the group and decreases along a period. 
belong to 
period
whereas Na and Mg are of 
period. Also, for isoelectronic species, greater the positive charge, smaller will be the radius. Hence, the correct order becomes 
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