Cu ve Cu+2 arasındaki fark, oksidasyon durumlarıdır: - Cu (bakır 1), bakırın +1 oksidasyon durumudur ve bir bakır atomundan bir elektron kaybıyla oluşur. - Cu+2 (bakır 2), bakırın +2 oksidasyon durumudur ve iki elektron kaybıyla oluşur.
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