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A stranger came upon a plastic container with a purple powder. The label on the bottle indicated [co(ox)3]4-. he brings it to the lab and asks you to investigate the degree of magnetism. determine the diamagnetic correlation calculation for u eff
Accepted Answer
The complex [Co(ox)3]4- is diamagnetic. Here's why:
1. Cobalt (Co) Electronic Configuration: Cobalt in its +3 oxidation state has the electronic configuration [Ar]3d6.
2. Oxalate (ox) Ligand: Oxalate is a strong field ligand, causing significant pairing of d-electrons.
3. Crystal Field Splitting: In an octahedral complex like this, the d-orbitals split into two energy levels: t2g (lower energy) and eg (higher energy).
4. Pairing of Electrons: The six d-electrons in Co(III) completely fill the t2g orbitals, leaving no unpaired electrons in the eg orbitals.
Therefore, the complex has zero unpaired electrons, resulting in diamagnetism.
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