Why is MnO2 called manganese IV?

Related questions

1. What are the oxidation numbers for MnO2?
2. What is the role of MnO2 in the reaction?
3. What happens when hydrogen peroxide reacts with manganese dioxide?
4. Is MnO2 a negative catalyst?
5. What does bismuth do to your body?
6. What are the disadvantages of dry cell?
7. Is Dry Cell really dry?
8. Is MnO2 a superoxide?
9. Why Zinc is used in dry cells?
10. Is bismuth oxychloride toxic?

Tags

1. #overall
2. #dioxide
3. #uncharged
4. #anion
5. #means
6. #compound
7. #oxidation
8. #there
9. #often
10. #charge
11. #oxygens
12. #state
13. #correct
14. #oxide
15. #chemist
16. #manganese
17. #which