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Answer: Two potassium cations and one dichromate anion make up potassium dichromate, an ionic compound. Tetrahedral coordination geometries surround the chromium atoms.
The oxidation state of potassium is +1, while the oxidation state of oxygen is -2.
So, potassium ions have a total charge of +1(2) = 2 , whereas oxygen ions have a charge of 2(7) = 14.
Let x be the chromium’s oxidation number.
As a result, we can express the equation as follows:
2+ x- 14 = 0
-12 + x = 0
x = 12
The oxidation number of two chromium atoms is thus +12
As a result, each chromium atom has an oxidation number of 12 / 2 = 6.
As a result, the Cr oxidation number in K2Cr2O7 is +6.
As a result, potassium has an oxidation state of + 1, oxygen has an oxidation state of -2, and chromium has an oxidation state of + 6 in the molecule.
