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))(NH_(3))]` respectively are

Options

A. `+`3,+4,and+6
B. `+3`,+2,and+4
C. `+3,`0,and+6
D. `+`3,0,and +4

Answer

C

Explanation

`[Cr(H_(2)O)_(6)]Cl_(3)`
`rArrx+6xx0+(-1)xx3=0`
`rArrx=+3`
`[Cr(C_(6)H_(6))_(2)]`
`x+2xx0=0,x=0`
`K_(2)[Cr(CN)_(2)(O)_(2)(O_(2))(NH_(3))]`
`2xx1+x+2xx(-1)+2xx(-2)+(-2)+0=0`
`x=+6`