1.

Which of the following complex has the highest stability constant at 298 K

Answer»

`[Cdcl_(4)]^(2-)`
`(CD(Br)_(4)]^(2-)`
`[CdI_(4)]^(2-)`
`[Cu(CN)_(4)]^(2-)`

Solution :As `CN^(-)` is strongest ligand it will form the most stable complex.
Hence, (D) is the correct


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