30. Determine the exchanging energies for high spin d⁶ ions in an octahedral complex.
(A) 1Ile
(B) 2Ile
(C) 3Ile 
(D) 4Ile
(E) 5Ile

31. On the basis of VSEPR, which of the following point group is NOT correct? (A) XeOF2 is (B) XeOF4 is (C) XeO2F2 is (D) XeO3F2 is (E) All correct

32. ion obtained from XeO3 in basic solution； this ion subsequently undergoes disproportion reaction in basic → products. Which one of the following is NOT one of the products? (A) Xe (B) (C)(D)O2 (E) H2O

33. Which one of the following structure is NOT geometry as pentagonal bipyramid(PBP)? (A) IF7(B) (C) (D)(E) None of above

34. Which one of the following structures is considered as "'See-saw"? (A)(B) IOF3 (C) (D) XeO2F2 (E) All of above

35. Glycine has the structure NH2CH2COOH. It can lose a proton from the carboxyl group and form chelate rings bonded through both N and one the O atoms. How many possible isomers of tris(glycinato)cobalt(III)? (A)3 (B)4 (C)5 (D)6 (E)8

36. The d2 ions have been reported. Which of following statements is false? (A) Complex has the largest value of .(B) Complex has the shortest metal- oxygen distance. (C) The nuclear charge of iron is greatest in this isoelectronic series. (D) These are LMCT absorption. (E) All of above.

37. What is the ground term for low-spin d4 ions? Which one of the following is correct? (A) Its configuration is t2g4eg0. (B) Spin multiplicity is 3. (C) Highest possible value of is 5. (D) The ground term is 3H. (E) All of above.

38. Which one of the following complexes is high spin? (A) (B) (C) (D) (E) None of above

39. A wide variety of ligands can kinetically stabilize ions that would normally be potent oxidizing agents. Which of the following statements is NOT correct for an example of Co(III)- Co(Il) couple? (A) Co(IIIl) is kinetically stable when coordinated with any ligand other than water of fluoride. (B) The hydrated is a very strong oxidizing agent, reacting readily with water to form H2 and Co(II). (C) The oxidation of a Co(Il) complex to a Co(IIl) complex generally results in a change from the high-spin Co(II) to the low-spin Co(IIl) accompanied by a significant increase in LFSE with almost any ligand. (D) The case in ( C ) often contributes to the stability of many Co(IIl) complexes, rending many of them weaker oxidizing agents than expected. (E) None of above.

40. Which one of the following complexes is labile? (A) (B) (C) (D)(E)

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