Verified Solution • 2025–26 Session moderate

QJEEM22Ch8be4: JEE Main 2022 Chemistry - Class 11 JEEM22Ch8be4 Solution: The correct order of increasing ionic radii is

The correct order of increasing ionic radii is

Multiple Choice Options

  • A Mg2+ < Na+ < F −- < O2 −- < N3 −-
  • B N3 −- < O2 −- < F −- < Na+ < Mg2+
  • C F −- < Na+ < O2 −- < Mg2+ < N3 −-
  • D Na+ < F −- < Mg2+ < O2 −- < N3 −-

Step-by-Step Verified Solution

For isoelectronic species

Ionic radii ∝(−) ve charge (+) ve charge \propto \frac{(-) \text { ve charge }}{(+) \text { ve charge }}

Hence, correct order of ionic radii is

Mg2+ < Na+ < F– < O2– < N3–

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