1.

Among the ligands `NH_3`, `en`, `CN^(-)` and `CO`, the correct order of their increasing field strength, isA. (a) `COltNH_3ltenltCN^(-)`B. (b) `NH_3ltenltCN^(-)ltCO`C. (c) `CN^(-)ltNH_3ltCOlten`D. (d) `enltCN^(-)ltNH_3ltCO`

Answer» Correct Answer - B
Based on spectrochemical series, ligands arranged in increasing order of crystal field strength are as
`NH_3ltenltCN^(-)ltCO`


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