35. Based on the molecular orbital diagram shown below, which one is the most stable species?
(A) NO^2-
(B)NO^- 
(C)NO
(D)NO⁺
(E) NO²⁺

31. At pH 8.0, the predominant form of ethylenediaminetetraacetic acid (EDTA; H4Y: K1= 1.02 x 10-2, K2 = 2.14 x 10-3, K3 = 6.92 x 10-7, K4 = 5.50 x 10-11) is (A) H3Y- (B)H2Y2- (C) HY3- (D) Equal amounts of H2Y2- and HY3- (E)Y4-

32. For a reaction producing both kinetic and thermodynamic products, which of the followings are linked to the kinetic product? (I) It is formed faster. (II) It is the more stable product.(III) l) It involves the lower energy transition state.(IV) ) It is favored with cold reaction conditions. (A) Only I (B) Only I, III and IV (C) Only II (D) Only II, III and IV (E) Only III

33. How many lone pairs of electrons are in the Lewis structure of D-glucose (C6H12O6 = 180.16 g mol- 1)? (A) 4 (B)6 (C)8 (D)9 (E)12

34. Which of the following structures represent aromatic compounds?(A) Only I, II and III (B) Only I, III and IV (C) Only I, II, and IV (D) Only II, III and IV (E) I, II, III and IV

36. Give the ground state electron configuration for Se2-. (A) [Ar]4s24p6 (B) [Ar]4s23d104p2 (C) [Ar]4s23d84p6 (D) [Ar]4s23d104p6 (E) [Ar]4s23d104p4

37. Displayed below is a step in the catalytic cycle of the Suzuki reaction, with 'L' representing a ligand. Which term from the provided options best describes this step?(A) Oxidative addition (B) Reductive elimination (C) Transmetallation (D) Nucleophilic substitution (E) None of the above

38. Which carbon atom is referred to as the anomeric carbon? (A)l (B)2 (C)3 (D)4 (E)5

39. Which complex ion, assuming M is the metal ion and X and Y are ligands in an octahedral geometry, can display geometric isomerism? (A) [MX6]2+ (B) [MX5Y]2+ (C) [MX4Y2]2+ (D) [MX3Y3]2+ (E) None of the above

40. A solution is prepared by mixing 2.0 M H3A and 2.0 M NaH2A in the equal volume (H3A: pXa1 = 2.10, pXa2 = 7.20, pXa3 = 12.30). Which one is the closest to the pH value of this mixture? (A) 2.10 (B) 2.45 (C) 4.65 (D) 7.20 (E) 9.75

41. Please select the accurate statements regarding entropy. (I) After the mixing of two gases, AS is positive.(II) Entropy is a thermodynamic property associated with the level of disorder. (III) If the temperature of a gas decreases, AS is positive. (IV) Molecules in the gaseous state exhibit higher entropy compared to those in the liquid state. (A) Only I and III (B) Only I, II, III (C) Only I and II (D) Only I, II, IV (E) Only II and III