en \(\Rightarrow\) chelating ligand
\(CN =6,\) octahedral splitting hence laye splitting of \(d-\)subshell
\(\left[ Fe \left( H _{2} O \right)_{6}\right] Cl _{2} \Rightarrow H _{2} O \Rightarrow\) Weak filled ligand
\(Fe ^{+2} \Rightarrow[ Ar ] 3 d ^{6} 4 s ^{0}\) less plitting
\(CN =6\) octahedral splitting
${\left[\mathrm{Fe}\left(\mathrm{H}_2 \mathrm{O}\right)_6\right]^{2+},\left[\mathrm{Co}\left(\mathrm{H}_2 \mathrm{O}\right)_6\right]^{2+},\left[\mathrm{Co}\left(\mathrm{H}_2 \mathrm{O}\right)_6\right]^{3+},}$
${\left[\mathrm{Cu}\left(\mathrm{H}_2 \mathrm{O}\right)_6\right]^{2+},\left[\mathrm{Cr}\left(\mathrm{H}_2 \mathrm{O}\right)_6\right]^{2+}}$
,$[M \,(AB)\, (CD) \,ef]^{n\,±}$ (જ્યાં $AB,\,CD-$ અસમમિતીય દ્વિદંતીય લિગાન્ડ્, $e$, $f-$ એકદંતીય લિગાન્ડ્)