1.

Which compound is zero valent metal complex?

Answer»

`[Cu(NH_(3))_(4)]SO_(4)`
`[Pt(NH_(3))_(2)CI_(2)]`
`[Ni(CO)_(4)]`
`K_(3) [FE(CN)_(6)]`

Solution :`[Cu(NH_(3))_(4)]SO_(4)` to oxidation no. of `Cu = +2`
`[Pt(NH_(3))_(2)CI_(2)]` to oxidation number of `Pt = +2`
` [Ni(CO)_(4)] to`oxidation number of `Ni = 0`
`K_(3)[Fe(CN)_(6)] to` oxidation number of `Fe = +3`


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