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The oxidation dissove in excess of NH4OH...

The oxidation dissove in excess of `NH_4OH.` The cation present in this solution is

A

(+)6

B

(+)7

C

(+)5

D

(+)8

Text Solution

Verified by Experts

The correct Answer is:
(b)
Oxidation number of Mn in `KMnO_4` can be determined as,
`1+ x + 4(-2) =0
1+x-8 =0`
`therefore x= +7 `
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SIA PUBLICATION-d AND f BLOCK ELEMENTS-MCQ"s
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  2. Which one of the following ions is colourless in aqueous solution ?

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