Which of the following is the correct order of ligand field strength?

Question

Canvas Classes · Accepted Answer

Strategy:
 The spectrochemical series is an experimentally determined series of ligands arranged in order of increasing field strength.

Step 1: Recall the relative positions
Halides and sulfides are weak field ligands. Water is intermediate. Ammonia and ethylenediamine are strong field, and carbonyl () is one of the strongest due to synergic bonding.

Step 2: Evaluate the sequence
The order  correctly shows the transition from weak field sulfur/oxygen donors to strong field nitrogen and carbon

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