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Manipal MET2024Chemistryd and f Block Elements

Which of the following ion is colourless inspite of the presence of unpaired electrons?

Options

  1. ALa ³⁺
  2. BEu ³⁺
  3. CGd ³⁺
  4. DLu ³⁺

Correct answer

C. Gd ³⁺

Step-by-step solution

Gadolinium does not absorb light in the visible region of spectrum, hence it is colourless inspite of the presence of seven unpaired electrons.

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