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Question
Which metal in the 3d series exhibits +1 oxidation state most frequently and why?
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Solution
1. The first transition metal copper exhibits only +1 oxidation state.
2. It is unique in 3d series having a stable +1 oxidation state.
Cu (Z = 29)
Electronic configuration is [Ar] 3d10 4s2
3. So copper element only can have +1 oxidation state.
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