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JEE Main20231 Feb 2023Morning ShiftChemistryCoordination CompoundsActual

Which of the following complex will show largest splitting of d-orbitals?

Options

  1. AFe C 2 O 4 3 3 -
  2. BFeF 6 3 -
  3. CFe ( CN ) 6 3 -
  4. DFe NH 3 6 3 +

Correct answer

C. Fe ( CN ) 6 3 -

Step-by-step solution

Some ligands are able to produce strong fields in which case, the splitting will be large whereas others produce weak fields and consequently result in a small splitting of d orbitals. In general, ligands can be arranged in a series called spectrochemical series according to which maximum splitting is done by the strongest ligand which is cyanide ( CN - ) ion in this case.

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