What is the usual oxidation state of Chromium (Cr) in Potassium Dichromate (K2Cr2O7)? - d and f BLOCK ELEMENTS Quiz | GKFix.in

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Question

What is the usual oxidation state of Chromium (Cr) in Potassium Dichromate (K2Cr2O7)?

A. +3
B. +4
C. +5
D. +6