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Chemistry Classification of Elements and Periodicity JEE Main 2022 Single Correct MCQ
Published on: August 11, 2026

The correct order of increasing ionic radii is

A
Mg 2+ < Na + < F - < O 2- < N 3-
B
N 3- < O 2- < F - < Na + < Mg 2+
C
F - < Na + < O 2- < Mg 2+ < N 3-
D
Na + < F - < Mg 2+ < O 2- < N 3-

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The correct answer is:
A

N -3 > O -2 > F - > Na + > Mg +2 (Radii) (Isoelectronic species)

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