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Question: Answered & Verified by Expert
Which of the following statements regarding Lanthanides is false?
Chemistryd and f Block ElementsWBJEEWBJEE 2016
Options:
  • A All lanthanides are solid at room temperature
  • B Their usual oxidation state is +3
  • C They can be separated from one another by ion-exchange method
  • D Ionic radii of trivalent lanthanides steadily increases with increase in atomic number
Solution:
2909 Upvotes Verified Answer
The correct answer is: Ionic radii of trivalent lanthanides steadily increases with increase in atomic number
The option (d) is false as lonic radi of trivalent lanthanides decreases with increase in atomic number due to lanthanoid contraction.

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