Identify the element with smallest ionic radius in +3 oxidation state from following

Identify the element with smallest ionic radius in +3 oxidation state from following
  1. $\mathrm{Yb}$
  2. Eu
  3. Er
  4. $\mathrm{Lu}$

Solution

As $\mathrm{z}$ increases radius decreases.

Asked in: MHT CET 2022 (10 Aug Shift 2)

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