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The absorption maxima of several octahed...

The absorption maxima of several octahedral complex ions are as follows:
`{:("S.No","Compound",lamda_(max)nm,),(1,[Co(NH_(3))_(6)]^(3+),475,),(2,[Co(CN)_(6)]^(3-),310,),(3,[Co(H_(2)O)_(6)]^(3+),490,):}`
The crystal field SQPlitting is maximum for :

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