[Co(en)2Cl2]+→ will show cis-tans isomerism [CrCl2(C2O4)2]3−→ will show cis-tans isomerism [Fe(H2O)4(OH)2]+→ will show cis-tans isomerism [Fe(CN)4(NH3)2]−→ will show cis-tans isomerism [Co(en)2(NH3)Cl]2+→will show cis-tans isomerism [Co(NH3)4(H2O)Cl]2+→ will not show cis-tans isomerism(Although it will show geometrical isomerism)