Multiple choice

Which of the following statements is correct?

  1. Lanthanum has smaller atomic radius than lutetium.

  2. Fluorides of lanthanides are water soluble.

  3. La3+ ions will exhibit colour in aqueous solutions.

  4. Lu3+ is diamagnetic.

  5. La(OH)3 is less basic than Lu(OH)3.
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Lu3+ (64e-) = [Xe]4f14 Due to lack of unpaired electrons, Lu3+ ions are diamagnetic.

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