Question

oxidation number of cr in Cr2O^2-

Answer 1

Answer:

I think answer is +12.............

Answer 2

Answer:

6

Explanation:

The oxidation number of chromium in dichromate is(Cr2O7^2-)

2x+7×(-2)=-2 (Oxidation number of Oxygen is -2)

2x=-2+14

2x=12

x=12÷2

x=6

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