1. Which of the following high spin complexes has the largest erystal feld stabilization enerig (CFSEJ? a) [Mn(H,O]/2t b) (Mn(H2O)eF2 a) (CrIH3Oa]2 (d) [Cr(H2O]Ile2 2. The primary and secondary valencies of cobalt ion in the complex Nas Catoxidtry. respectively, are a) (+2,6) b) (+2,6) (c) (+3,6) el (+2,4) 3. Which of the following statements regarding the complex ion [MnO.] is correct a) Mn is in a low oxidation atate. b) dridn' back bonding takes place (c) par-dr bonding takes place d) 02 acts as acceptor ligand 4. How many acac molecules are required to make an octahedral complex with a v : ion. a) 6 (b) 3 c) 1 di 4 el 2 5. Which of the following facts about the complex [CoNH]N]Cl3 is wrong a) The complex involves d2sp? hybridization and is octahedral in ahape b) The complex is paramagnetic c) The complex is an outer orbital complex d) The complex gives white precipitate with silver nitrate solution CHEMY 341 , HOMEWORK [7] 6. Which of the following statements about the ligand "glycine" in the complex [Pt(gly)a] is correct? a) Glycine forms two 5-membered chelate rings with Ptit ion in a 1:1 stoichiometric ratio via one nitro-group and one carbosylate-group b) Glycine forms two 5-membered chelate rings with Pt2 - ion in a 12 stoichiometric ratio via one nitro-group and one amino-group c) Glycine coordinates to Pt2 - ion via neutral N-atom and negatively charged O-atom, in a 1:2 stoichiometric ratio forming netral chelate in a 1:2 stoichiometric ratio forming neutral chelate e) Glycine can coordinate to P12* ion forming only cis isomer 7. Compounds which obey 18 electron rule are kinetically inert to substitution reactions. a) True b) False 8. n-donating ligands are strong field ligands forming low spin complexes. a) True b) False. 9. CO is a donor as well as n acceptor ligand. a) True b) False