Question

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

Answer 1

Correct Answer - B
`(i) [Cr(H_(2)P)_(6)]Cl_(3) `
`x+6xx0-3=0
x=+3`
(ii) `[Cr(C_(6)H_(6))_(2)] `
`x+2xx0=0 x=0`
(iii) `K_(2)[Cr(CN)_(2)(O)_(2)(O)_(2)(NH_(3))]`
`+2+x-2-4-2+0=0
x=+6`