Practice question

MCQ

Question

Which complex is colored due to a d-d transition?

Choose one · Correct answer highlighted

[Ni(CO)4] [Fe(CN)6]4− [Ni(H₂O)6]2+ Correct [Co(CN)6]3−

[Ni(H₂O)6]2+ (Ni₂+, d8) in an octahedral field undergoes d-d transitions, absorbing visible light (green color).

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