We’re gift asked to identify theoxidation state of manganeseinMnO2 (manganese (IV) oxide).

You are watching: Oxidation number of mn in mno2

The rules for oxidation claims are as follows:

A. Basic Rules:

1. For an atom in that elemental type (Zn, Cl2, C(graphite), etc.) O.S. = 0

2. For an ion (Li+, Al3+, etc.) O.S. = charge

B. Particular Rules:

1. Team 1A O.S. = +1

2. Group 2A O.S. = +2

3. Hydrogen O.S. = +1, with nonmetals

O.S. = –1 v metals and boron

4. Fluorine O.S. = –1

5. Oxygen O.S. = –1 in peroxides (X2O2, X = group 1A)

O.S. = –1/2 in superoxides (XO2, X = team 1A)

O.S. = –2 in other compounds

6. Team 7A O.S. = –1 (except once bonded to O)

Since Mn2O3 is neithera peroxide or superoxide,the oxidation state of every oxygen atom is –2.

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Problem Details

What is the oxidation variety of manganese in MnO2?

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