What is the oxidation state of Chromium in the Potassium dichromate (K₂Cr₂O₇) compound?

+3
+4
+6
+7

📝 Detailed explanation

Sum of oxidation states: 2(+1) + 2(x) + 7(-2) = 0.
2 + 2x - 14 = 0 -> 2x = 12 -> x = +6.

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