Which complex has the highest crystal field splitting energy with

Practice question

Question

Which complex has the highest crystal field splitting energy (Δo) with Co₃+ as the central ion?

Choose one · Correct answer highlighted

[CoF₆]3− [Co(H₂O)6]3+ [Co(CN)6]3− Correct [Co(NH₃)6]3+

Δo depends on ligand strength (spectrochemical series: CN− > NH₃ > H₂O > F−). [Co(CN)6]3− with strong field CN− has the highest Δo.

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