Question

What is correct order of strength of following ligands according to spectrochemical series

Cl^–, F^–, I^–, CN^–, OH^–

(1) CN^– < OH^– < F^– < CI^– < I^–

(2) I^– < CI^– < F^– < OH^– < CN^–

(3) I^– < CI^– < F^– < CN^– < OH^–

(4) F^– < CI^– < I^– < OH^– < CN^–

Answer 1

Correct option is (2) I^– < CI^– < F^– < OH^– < CN^–

Spectrochemical series:

\(I^- < Br^- < SCN^-<Cl^-< S^{2-}< F^- < OH^- <C_2O_4^{2-} <\\ H_2O<NCS^-<EDTA^{4-} < NH_3< en < CN^-< CO\)