Arrange the following ligands in the order of increasing field strength. $$ \begin{array}{ccccc}…

Arrange the following ligands in the order of increasing field strength. $$ \begin{array}{ccccc} \mathrm{H}_2 \mathrm{O} & \mathrm{CO} & \mathrm{NH}_3 & \mathrm{I}^{-} & \mathrm{F}^{-} \\ \text {I } & \text { II } & \text { III } & \text { IV } & \text { V } \end{array} $$
  1. IV < V < I < III < II
  2. IV < V < III < II < I
  3. V < IV < III < I < II
  4. IV < I < V < II < III

Solution

According to spectrochemical series the correct order of increasing field strength of ligands is $ \mathrm{I}^{-} < \mathrm{F}^{-} < \mathrm{H}_2 \mathrm{O} < \mathrm{NH}_3 < \mathrm{CO} . $

Asked in: AP EAMCET 2018 (23 Apr Shift 1)

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