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JEE Main202330 Jan 2023Morning ShiftChemistryCoordination CompoundsActual

Which of the following is correct order of ligand field strength?

Options

  1. ACO < en < NH 3 < C 2 O 4 2 - < S 2 -
  2. BS 2 - < C 2 O 4 2 - < NH 3 < en < CO
  3. CNH 3 < en < CO < S 2 - < C 2 O 4 2 -
  4. DS 2 - < NH 3 < en < CO < C 2 O 4 2 -

Correct answer

B. S 2 - < C 2 O 4 2 - < NH 3 < en < CO

Step-by-step solution

According to spectrochemical series, ligands can be arranged in a series in the order of increasing field strength as given below: I   –     <   Br –     <   SCN   –     <   Cl   –     <   S 2 –     <   F   –     <   OH   –     <   C 2 O 4   2 –     <   H 2 O   <   NCS  

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