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Question
Which metal in the first series of transition metals exhibits +1 oxidation state most frequently and why?
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Solution
- Copper (Cu) in the first series of transition metals most frequently exhibits the +1 oxidation state.
- This occurs because Cu has the electronic configuration [Ar] 3d10 4s1.
- When Cu forms the +1 ion (Cu+), it achieves a completely filled and very stable 3d10 configuration.
- The extra stability of the filled d-subshell makes the +1 oxidation state common for copper compared to other first transition metals.
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