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Questions and Answers
Which oxidation state of cobalt tends to form many stable complexes?
Which oxidation state of cobalt tends to form many stable complexes?
What is the KH2O exchange value for Co2+?
What is the KH2O exchange value for Co2+?
Why is Co2+ considered a good starting material (precursor)?
Why is Co2+ considered a good starting material (precursor)?
Why is Co3+ diamagnetic?
Why is Co3+ diamagnetic?
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Why is Co3+ unstable in an aqua medium?
Why is Co3+ unstable in an aqua medium?
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Study Notes
Cobalt Oxidation States
- Co2+ tends to form many stable complexes.
- The KH2O exchange value for Co2+ is 1.8.
Properties of Co2+
- Co2+ is a good starting material (precursor) due to its ease of preparation and ability to be oxidized to Co3+.
Properties of Co3+
- Co3+ is diamagnetic due to the pairing of all electrons in its d-orbital configuration.
- Co3+ is unstable in an aqua medium and undergoes rapid reduction to Co2+.
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Description
Understand the preparation of [Co(NH3)6]Cl3 and the importance of Co (II) and Co (III) oxidation states in cobalt complexes. Learn about the characteristics of Co (II) and Co (III) and their relevance in forming stable complexes. Explore the electronic configuration and the Crystal Field Stabilization Energy (C.F.S.E) in this quiz.
