High Spin And Low Spin
Low spin complexes are formed with:
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About This Question
- Subject
- chemistry
- Chapter
- coordination compounds
- Topic
- high spin and low spin
- Difficulty
- Easy
- Year
- 2025
Solution
Correct Answer:
Strong field ligands
Crystal Field Splitting Energy (Δo) vs Pairing Energy (P):
- Strong Field Ligands: Cause a large Δo. If Δo>P, electrons prefer to pair up in the lower t2g orbitals rather than jump to high-energy eg orbitals. This results in the minimum possible number of unpaired electrons (Low Spin Complex).
- Weak Field Ligands: Cause small splitting. If Δo<P, electrons occupy eg before pairing. This leads to the maximum number of unpaired electrons (High Spin Complex).
This easy difficulty chemistry question is from the chapter coordination compounds, covering the topic of high spin and low spin. It appeared in the 2025 exam.
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