Question

The correct order of ligands arranged in increasing field strength.

(1) \(Cl^- < \,^- OH < Br ^- < CN ^-\)

(2) \(\mathrm{F}^{-}<\mathrm{Br}^{-}<\mathrm{I}^{-}<\mathrm{NH}_3\)

(3) \(\mathrm{Br}^{-}<\mathrm{F}^{-}<\mathrm{H}_2 \mathrm{O}<\mathrm{NH}_3\)

(4) \(\mathrm{H}_2 \mathrm{O}<{ }^{-} \mathrm{OH}<\mathrm{CN}^{-}<\mathrm{NH}_3\)

Answer 1

Correct option is (3) \(\mathrm{Br}^{-}<\mathrm{F}^{-}<\mathrm{H}_2 \mathrm{O}<\mathrm{NH}_3\)

Experimental order \(\mathrm{Br}^{-}<\mathrm{F}^{-}<\mathrm{H}_2 \mathrm{O}<\mathrm{NH}_3\).