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The oxidation states of Cr in [Cr (H(2)O...

The oxidation states of Cr in `[Cr (H_(2)O)_(6)]Cl_(3) , [Cr (C_(6) H_(6))_(2)]` and `K_(2) [Cr(CN)_(2) (O)_(2) (O_(2)) (NH_(3))]` respectively are -

A

`+3` , 0 and `+ 6 `

B

`+3 , ` 0 and `+4`

C

`+3 ,+ 4` and `+6`

D

`+3 , + 2 ` and `+4 `

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