Q. The oxidation state of chromium in Cr₂O₇²⁻ is:
✅ Correct Answer: (C)
+6
Explanation: Let oxidation state of Cr be x. Then 2x + 7(-2) = -2, giving x = +6.
Explanation by: Jyoti
Let oxidation state of Cr be x. Then 2x + 7(-2) = -2, giving x = +6.