1.

In which transfer of five electrons takes place

Answer»

`Cr_(2)O_(7)^(2-) rarr 2 Cr^(3+)`
`CrO_(4)^(2-) rarr Cr^(3+)`
`MnO_(4)^(-) rarr MnO_(2)`
`MnO_(4)^(-) rarr MN^(2+)`

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