What is the oxidation number of manganese in MnO2?

Related questions

1. Why acidic character increases with increase in oxidation state?
2. Which is more acidic MnO or MnO2?
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4. How does oxidation state affect acidity?
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Tags

1. #exhibits
2. #guidelines
3. #nonmetals
4. #other
5. #total
6. #number
7. #requires
8. #oxidation
9. #neutral
10. #compound
11. #charge
12. #numbers
13. #oxygen
14. #paired
15. #metals
16. #always
17. #manganese
18. #indicate