The element chromium (Cr) has its oxidation number in K2Cr2O7
1) + 6
2) – 2
3) + 7
4) – 7
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The element chromium (Cr) has its oxidation number in K2Cr2O7
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The element chromium (Cr) has its oxidation number in K2Cr2O7
1) + 6
2) – 2
3) + 7
4) – 7
1) + 6