AP Chemistrymediummcq1 pt
What is the oxidation number of Mn in MnO₄⁻?
A.+7
B.+6
C.+5
D.−7
Explanation
Core Concept
Mn + 4(−2) = −1, so Mn = +7. Permanganate holds manganese at its highest common oxidation state, which is why it is a powerful oxidizer.
Correct Answer
A+7
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