Bromine dioxide, also known as bromine(IV) oxide, is a chemical compound. Its chemical formula is BrO2. It contains bromine in its +4 oxidation state. It also contains oxide ions.
It is a yellow or yellow-orange solid. It is very unstable. It turns into bromine and oxygen easily. It is similar to chlorine dioxide. It reacts with a base to make bromide and bromate.
It is made when an electric current is passed through a mixture of cold bromine and oxygen gases. It also can be made by reacting bromine in an organic solvent with ozone.
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