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Redox Reactions — Chemistry STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 ScienceChemistryRedox Reactions2 Marks
Question
What is oxidation state of Cr in $\mathrm{K}_2 \mathrm{Cr}_2 \mathrm{O}_7$ ?
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Answer

+2 + 2x - 14 = 0
2x = 12
x = +6

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