Question

calculate the oxidation number of k2cr_2O7​

Answer 1

Answer:

Potassium dichromate

Explanation:

Potassium dichromate, K 2Cr 2O 7, is a common inorganic chemical reagent, most commonly used as an oxidizing agent in various laboratory and industrial applications. As with all hexavalent chromium compounds, it is acutely and chronically harmful to health.

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Answer 2

Answer:

In K2Cr2O7 , potassium has a +1 charge, and oxygen has a −2 charge.

So, the total charge of potassium ions is +1⋅2=+2 , while oxygen ions is −2⋅7=−14 .

Let x be the oxidation number of two chromiums.

2+x−14=0.

−12+x=0.

x=12.