Oxidation number of Cr in K2Cr2O7 21. is A. 2 B. 4 C. 6 D. 7

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Muskan Anand

2 years ago

Oxidation number of Cr in K2Cr2O7 is 2(+1) + 22(x) + 7(-2) = 0 2+2x -14= 0 2x= 12 x=6

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