Chemistry Practice Problems Calculate Oxidation Number Practice Problems Solution: Determine the oxidation state (number) of bromine ...

Solution: Determine the oxidation state (number) of bromine in BrO2- :A. -1B. 0C. +3D. +5E. +7

Problem

Determine the oxidation state (number) of bromine in BrO2- :

A. -1

B. 0

C. +3

D. +5

E. +7

Solution

We’re being asked to determine the oxidation state of Br in BrO2 


The rules for oxidation states are as follows:

A. General Rules:

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

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


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