Question

Number
Oxidation
K₂ Cr2 O7​

Answer 1

There are seven oxygen atoms, so the total charge is −2⋅7=−14 . So, two chromium atoms have a total oxidation number of +12 . Since one is not more electronegative than the other, we can divide the number by two to get one chromium's oxidation number. So, a chromium atom here has an oxidation number of +6 .

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Answer 2

Answer:

6

Explanation:

oxidation of Cr2 in K2Cr2O7 is 6

i dont know it is correct or not

i just guessed