What is the oxidation number of Cr in CrO4 2-?
Understand the Problem
The question is asking for the oxidation number of chromium (Cr) in the chromate ion (CrO4) with a charge of 2-. To find this, we set up an equation based on the known oxidation states of oxygen and the overall charge of the ion. Each oxygen has an oxidation state of -2, and we can use that information to calculate the oxidation state of chromium.
Answer
+6
The final answer is +6
Answer for screen readers
The final answer is +6
More Information
Chromium is in the +6 oxidation state in CrO4^2-, known as the chromate ion. This higher oxidation state is typically seen in chromium's compounds involving oxygen.
Tips
A common mistake is miscalculating the contributions from each oxygen atom or not considering the overall charge of the ion.
Sources
- What is the oxidation state of Cr in CrO4 2? - echemi.com
- What will be the oxidation state of Cr in CrO4? - quora.com
- Solved 7. What is the oxidation number of Cr in CrO4^2-? - chegg.com
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