Question

structure of dichromate ion

Answer 1

Chromate salts contain the chromate anion, CrO2−

4. Dichromate salts contain the dichromate anion, Cr

2O2−

7. They are oxoanions of chromium in the 6+ oxidation state and are moderately strong oxidizing agents. In an aqueous solution, chromate and dichromate ions can be interconvertible.