AP Chemistrymediummcq1 pt
What is the oxidation number of oxygen in H₂O₂?
A.−1
B.−2
C.0
D.+1
Explanation
Core Concept
Peroxides are the exception to oxygen's usual −2. In H₂O₂, two H (+2 total) force each oxygen to −1.
Correct Answer
A−1
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