Spectrochemical Series
In the spectrochemical series, the correct order of ligand strength is:
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About This Question
- Subject
- chemistry
- Chapter
- coordination compounds
- Topic
- spectrochemical series
- Difficulty
- Easy
- Year
- 2025
Solution
Correct Answer:
I⁻ < Br⁻ < Cl⁻ < F⁻ and CN⁻ (strongest)
The Spectrochemical Series arranges ligands based on their ability to split d-orbitals (Δ value): I−<Br−<SCN−<Cl−<S2−<F−<OH−<C2O42−<H2O<NCS−<edta4−<NH3<en<NO2−<CN−<CO
- Weak Field Ligands: (I,Br,Cl,F,H2O) cause small splitting.
- Strong Field Ligands: (NH3,en,CN−,CO) cause large splitting and often result in electron pairing.
This easy difficulty chemistry question is from the chapter coordination compounds, covering the topic of spectrochemical series. It appeared in the 2025 exam.
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