Chemistry
NULL
Medium
Question
In K2Cr2O7 the oxidation number of chromium is____________________?
A
7
B
6
✓ Official correct answer
C
-7
D
-6
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A
7
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B
6
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C
-7
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D
-6
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Explanation
In K2Cr2O7, balancing charges (K=+1, O=-2) gives chromium an oxidation number of +6.
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