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A reasonable man in Black Rock 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. (c) determine the diagmagnetic correction calculation for Ueff
Accepted Answer
The complex ion [Co(ox)3]4- has a cobalt(II) ion (Co2+) as the central metal ion. Cobalt(II) has a d7 electronic configuration. The oxalate ligand (ox) is a bidentate ligand that creates a low-spin complex with cobalt(II) due to its strong field nature. This means all 7 electrons are paired in the d orbitals. Since all electrons are paired, the complex will be diamagnetic, which means it is not attracted to a magnetic field. Therefore, the diamagnetic correction (Ueff) for this complex would be 0.
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