The effect of lanthanoid contraction in the lanthanoid series of

Question:

The effect of lanthanoid contraction in the lanthanoid series of elements by and large means:

  1. increase in both atomic and ionic radii

  2. decrease in atomic radii and increase in ionic radii

  3. decrease in both atomic and ionic radii

  4. increase in atomic radii and decrease in ionic radii

Correct Option: , 2

Solution:

Due to lanthanoid contraction, size of atom as well as ion of lanthanoid decreases.

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