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How would you account for the increasing oxidising power in the series `VO_2^(o+)ltCr_2O_7^(2-)< MnO_4^(ɵ)`?A. `VO_(2)^(+) lt Cr_(2)O_(7)^(2-) lt MnO_(4)`B. `Cr_(2)O_(7)^(2) lt VO_(2)^(+) lt MnO_(4)^(-)`C. `Cr_(2)O_(7)^(2-) lt MnO_(4)^(-) lt VO_(2)^(-)`D. `MnO_(4)^(-) lt Cr_(2)O_(7)^(2-) lt VO_(2)^(+)`

Answer» Correct Answer - A
Oxidising power increases with increase of oxidation number of central atom.
`Mn (O.S.)` in `MnO_(4)^(-) = +7`
`Cr (o .S.)` in `Cr_(2)O_(7)^(2-) = +6`
`V (O.S.)` in `VO_(2)^(+) = +5`


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