A) + 1
B) + 2
C) + 3
D) + 4
Correct Answer: B
Solution :
+ 2 is most important oxidation state \[C{{u}^{+1}}+{{e}^{-}}\to Cu\]; \[{{E}^{0}}=+0.52\,V\] \[C{{u}^{+2}}+2{{e}^{-}}\to Cu\]; \[{{E}^{0}}=+0.34\,V\]
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