Q. 23. Identify the ligands from the following coordinate compounds: (a) [Co(en)2 Cl(NO2)2] (b) K [Co(CN) (CO)2 (NO)] (c) K3 [Al (OH)6] (d) [Co(H2O)2 (NH3)4] (OH)3 Q. 24. What are bridging ligands ? Q. 25. Define oxidation number. Q. 26. What is the oxidation number of the central metal atom (underlined) in each of the following complex species : (a) K4[Fe (CN)6] (b) [Fe (H2O)6] Cl3 (c) [Pt (NH3)2Cl2] Cl2 (d) [Co(NH3)4 (H2O) Br] (NO3)2
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