The wavelength of light absorbed for the following complexes are in the order [ Co ( NH_3)_6]^3+; [ Co ( H_2 O )_6]^3+;[ Co ( CN )_6]^3-;[ Co (…

The wavelength of light absorbed for the following complexes are in the order

$$\left[\mathrm{Co}\left(\mathrm{NH}_3\right)_6\right]^{$\displaystyle 3$+} ; \quad\left[\mathrm{Co}\left(\mathrm{H}_2 \mathrm{O}\right)_6\right]^{$\displaystyle 3$+} ;\left[\mathrm{Co}(\mathrm{CN})_6\right]^{$\displaystyle 3$-} ;\left[\mathrm{Co}\left(\mathrm{NH}_3\right)_5\left(\mathrm{H}_2 \mathrm{O}\right)\right]^{$\displaystyle 3$+} ;\left[\mathrm{CoF}_6\right]^{$\displaystyle 3$-}

$$(I) (II) (III)