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What is the oxidation number of Mn is Mn...

What is the oxidation number of Mn is `MnO_(4)^(-)`?

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Mn in `MnO_4^(-)` , Let the oxidation number of Mn in `MnO_4^(-)` be x. Writing oxidation number of each atom above its symbol, we get,
`overset(x)(Mn)overset(-2)O_4i.e., x+4(-2)=-1i.e., x=+7`
Thus, the oxidation number of Mn in `MnO_4^(-)` is +7
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Knowledge Check

  • The oxidation number of Mn is +7 in

    A
    maganese dioxide
    B
    manganese chloride
    C
    manganese sulphate
    D
    Pottassium permagnate

  • Oxidation number of Mn in MnO_(4)^(-) ion is :

    A
    `+1`
    B
    `-7`
    C
    `-1`
    D
    `+7`.

  • In a reaction K_(2)MnO_(4) is converted into KMnO_(4) The change in the oxidation number of Mn is :

    A
    zero
    B
    `+1`
    C
    `-1`
    D
    `+7 `

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