1.

Which of the following is a neutral complex?

Answer»

`[PT(NH_(3))_(2)Cl_(2)]`
`[CO(NH_(3))_(6)]Cl_(3)`
`[Ni(NH_(3))_(6)]Cl_(2)`
`K_(4)[Fe(CN)_(6))]`

Solution :`[Pt(NH_(3))_(2)Cl_(2)]` carry no net charge hence it is neutral complex.
`[Co(NH_(3))_(6)] ltimplies [Co(NH_(3))_(6)]^(3+) + 3CL^(-)`
`[Ni(NH_(3))_(6)]Cl_(2) ltimplies [Ni(NH_(3))_(6)]^(2+) + 2Cl^(-)`
Cationic complexes.
`underset("Anionic complex")(K_(4)Fe(CN_(6)) ltimplies 4K^(+) + [Fe(CN)_(6)]^(4-)`


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