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What is the difference between a weak field ligand and a strong field ligand? - Chemistry

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Question

What is the difference between a weak field ligand and a strong field ligand?

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Solution

S.No. Weak Field Ligand Strong Field Ligand
1. These are the ligands used in octahedral complexes in which the crystal field stabilization energy Δ° is less than pairing energy (P) in a single orbital. These are the ligands used in octahedral complexes in which the crystal field stabilization energy Δ° is greater than pairing energy (P).
2. Complexes formed by these ligands are also known as high-spin complexes. Complexes formed by these ligands are also known as low-spin complexes
3. The complexes formed are generally paramagnetic in nature. The complexes formed are mostly diamagnetic or comparatively less paramagnetic in nature.
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2021-2022 (April) Term 2 - Delhi Set 1

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