1.

Arrange following complex ions in increasing order of crystal field splitting energy `(Delta_(0))`, `Cr(Cl)_(6)]^(3-)`, `[Cr(CN)_(3)]^(3-)`, `[Cr(NH_(3))_(6)]^(3+)`

Answer» The order of increasing `Delta_(0)` value for the complex ions is:
`[CrCl_(6)]^(3-) lt [Cr(NH_(3))_(6)]^(3+) lt [Cr(CN)_(4)]^(3-)`
This is because of increasing order of the `Delta_(0)` valuesof the ligands in the spectrochemical series.


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