Chemistry

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Obtain the oxidation number for the element noted in each of the following.

Nb in NbO2

Br in KBrO4

Mn in KMnO4

Also I want to know how to do it.

  • Chemistry -

    Here is a good site. Post any questions as a follow up.
    (Broken Link Removed)

  • Chemistry -

    We shall be happy to check your answers.

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