Verified Solution • 2025–26 Session moderate

QJEEM19Ch9127: JEE Main 2019 Chemistry - Class 12 JEEM19Ch9127 Solution: The correct order of atomic radii is :

The correct order of atomic radii is :

Multiple Choice Options

  • A Ho > N > Eu > Ce
  • B Ce > Eu > Ho > N
  • C N > Ce > Eu > Ho
  • D Eu > Ce > Ho > N

Step-by-Step Verified Solution

In lanthanide series from left to right atomic radius decreases but the exception is Europiun (Eu) and Ytterbium (Yb).

So the correct order is : Eu > Ce > Ho > N

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