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The conditions and consequence that favours the t2g3 eg1 configuration in a metal complex are : (1) weak field ligand, high spin complex (2) strong field ligand, high spin complex (3) strong field ligand, low spin complex (4) weak field ligand, low spin complex

1. weak field ligand, high spin complex
2. strong field ligand, high spin complex
3. strong field ligand, low spin complex
4. weak field ligand, low spin complex

Correct answer: weak field ligand, high spin complex

Solution

A weak field ligand does not cause a significant splitting of the d-orbitals, allowing electrons to occupy higher energy orbitals and resulting in a high spin configuration. This configuration is favored in cases where the energy required to pair electrons is greater than the energy gained from occupying the higher energy orbitals.

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