The oxidation state of chromium in dichromate ion cr2o72

- What is the oxidation state of chromium in the dichromate ion cr2o72 −
- What is the oxidation state of chromium in dichromate ion cr2o7 2
- What is the oxidation state of chromium in the dichromate ion cr2o72 − select one
- Determine the oxidation state of the metal atom in each of the following complex ions