1) Among the complex ions,[Co(NH2−CH2−CH2−NH2)2Cl2]+, [CrCl2(C2O4)2]3−, [Fe(H2O)4(OH)2]+,[Fe(NH3)2(CN)4]− [Co(NH2−CH2−CH2−NH2)2(NH3)Cl]2+ and [Co(NH3)4(H2O)Cl]2+ the number of complex ion(s) that show(s) cis-trans isomerism is A) 4 B) 5 C) 6 D) 8 Answer: Option CExplanation:All six complex will show cis - trans isomerism