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Calculate the oxidation number of the un...

Calculate the oxidation number of the underlined element in the following molecules.
`Kul(Mn)O_(4)`

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`KMnO_(4)` Suppose the oxidation number of Mn in `KMnO_(4)` is x. The oxidatio number of K is +1 because it is an alkali metal and the oxidation number of each O atom is -2. Since `KMnO_(4)` is a neutral molecule, we have
`+1+(x)+(-2)xx4=0`
or x=+7
Hence, the oxidation number of Mn in `KMnO_(4)` is +7.
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ICSE-REDOX REACTIONS (OXIDATION AND REDUCTION)-NCERT TEXT-BOOK. EXERCISES ((With Hints and Solutions)
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