In which of the following choices is the oxidation number incorrect?
A) Al3+(aq) ; oxidation number = 3+
B) F-(aq) ; oxidation number = 1-
C) Br2(s) ; oxidation number = 0
D) Na+(aq) ; oxidation number = 1+
E) Cu(s) ; oxidation number = 2+
Correct Answer:
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