111年 - 111 台灣聯合大學系統_碩士班招生考試試題_化學類：無機化學#118896

科目：研究所、轉學考(插大)◆無機化學 | 年份：111年 | 選擇題數：50 | 申論題數：0

試卷資訊

所屬科目：研究所、轉學考(插大)◆無機化學

選擇題 (50)

1. Please consider which type of atomic orbital is the following wave function belonging to?
(A) (B) (C) (D) (E)
2. Which of the following descriptions for atomic structure is incorrect? (A) The 2s orbital has a nodal surface. (B) The angular functions of atomic orbitals determine how the probability changes from point to point at a given distance from the center of the atom. (C) 3d orbitals have no radial nodes. (D) Coulombic energy depends on the number of possible exchanges between two electrons with the same energy and the same spin. (E) There are 3 angular nodes in f orbitals.
3. Please use Slater's rules to determine the effective nuclear charge of a 4s electron of Cu. The effective nuclear charge is (A) 3.55 (B) 3.70 (C) 4.05 (D) 4.20 (E) none of above.

4. About the shape and geometry of molecules, which of the following descriptions is incorrect? (A) The Cl-Sn-CI bond angle in SnCl2 is smaller than 120°. (B) XeF4 is a square planar molecule. (C) In carbonyl fluoride COF2, the F-C-F angle is larger than the O-C-F angle. (D) CIF3 has a T-shaped structure. (E) In XeOF4, no F atom is trans to the O atom.
5. Which of the following geometries is the correct one for SF4? (A) Tetrahedral (B) Seesaw (C) Square planar (D) Square antiprismatic (E) Square pyramidal

6. Which of the following molecules or ions has the same molecular geometry with H2O? (A) (B) CO2 (C) SO2 (D) XeF2 (E)

7. What point group does osmocene Os(C5H5)2 (eclipse) belong to? (A) (B) (C) (D) (E) S5

8. Which of the following molecule belongs to point group? (A) Water H2O (B) Carbon dioxide CO2 (C) Ammonia NH3 (D) Diborane B2H6 (E) Allene H2C=C=CH2

9. Which of the following answers is the correct irreducible representation sum of the reducible representation ?
(A)A1+A2+B1+B2(B)2A1+B1+B2(C)3A2+B1(D)A1+2A2+B2(E) A2 +2B1+B2

10. Which of the following descriptions is correct for Mn(CO)5Cl?
(A) Mn(CO)5Cl should have five IR-active stretching modes. (B) Mn(CO)5CI should have three IR-active stretching modes from A1. (C) Mn(CO)5CI should have two IR-active stretching modes from E. (D) Mn(CO)5CI should have one IR-active stretching mode from B1. (E) Mn(CO)5Cl should have two IR-inactive stretching modes.
11. How many wave node planes can be found in 8* orbitals? (A)3 (B)4 (C)5 (D)6 (E)7

12. Which of the following is the correct order for the internuclear distances of diatomic molecules/ions? (A)(B)(C)(D)(E) None of above
13. Which of the following descriptions is correct for KrBr+? (A) The electrons with highest energy are in t orbitals.(B) The HOMO is polarized toward Br. (C) The bond order equals 2. (D) Br is more electronegative than Kr. (E) None of above.

14. If z axis goes through A-B bond of molecule AB, please consider which of the following combination of atomic orbitals from atom A and atom B cannot form chemical bonding? (A)(B)(C)(D)(E)

15. Which of the following molecules/ions can be a Lewis acid? (A) Hexane (B) Borane (C) Dinitrogen (D) (E) Diethyl ether
16. Which of the following molecules is the strongest base in aqueous solution? (A) NH3 (B) NH2Me (C) NHMe2 (D) NMe3 (E) NH2Ph
17. Which of the following answers shows the correct order of solubility in water for lead compounds? (A) PbS ＞ PbI2 ＞ PbBr2 ＞ PbCl2 (B) PbI2 ＞ PbBr2 ＞ PbCl2 ＞ PbS (C) PbS ＞ PbCI2 ＞ PbBr2 ＞ PbI2 (D) PbCl2 ＞ PbBr2 ＞ PbI2 ＞ PbS (E) PbBr2 ＞ PbCl2 ＞ PbS ＞ PbI2
18. Which of the following unit cells belongs to D4h point group? (A) Body-centered tetragonal (B) Face-centered cubic (C) Diamond (D) CsCI (E) Nickel arsenide
19. Which of the following electron configurations is incorrect? (A) V: [Ar]4s23d3 (B) Cr: [Ar]4s23d4 (C) Mn: [Ar]4s23d5 (D) Ni: [Ar]4s23d8 (E) Zn: [Ar]4s23d10

20. In point group, x and y coordinates belong to which of the following representations?
(A) A1 and A2(B) A2 and B1 (C) A1 and B1 (D) A2 and B2 (E) B1 and B2

21. Which of the following answers includes only hard acids? (A) (B) (C) (D) CO, (E) TI(CH3)3,

22. Which of the following descriptions for sulfur is incorrect? (A) The most stable form at room temperature is a-S8. (B) The viscosity of sulfur decreases as the temperature increases from 120℃ to 300℃ (C) Sulfur can form linear long chain structure. (D) SO3 can be absorbed easily by sulfuric acid. (E) Peroxodisulfate is a useful oxidizing agent.

23. Which of the following descriptions for xenon is incorrect? (A) Xe can be reduced by PtF6 to form XeF+. (B) Xenon can be a ligand for . (C) The number of lone pairs on Xe in XeF4 is 2. (D) XeF4 has a square planar geometry. (E) Xe-N and Xe-C bonds can be found in some compounds.

24. Which of the following descriptions for carbon is incorrect? (A) Potassium atoms can be intercalated between graphite layers to form a strong reducing agent. (B) The point group of Buckminsterfullerene is . (C) The crystal structure of calcium carbide, CaC2, resembles that of NaCl. (D) 5-Coordinatie carbon can be found in some alkyl metal compounds. (E) Graphyne is constructed by carbon atoms with only single and double bonds.
25. Please select the correct oxidation states for nitrogen in the following compounds: NH3OH+, NO, N2O4. (A)-2,+1,+4(B)-1,+1,+3 (C)-2,+2,+3 (D)-1,+2,+4 (E) None of above.
26. The number of possible pairs of enantiomers for the formula M(ABA)cde? ABA is a tridentate ligand and c, d, e are a monodentate ligand. (A)1 (B)2 (C)3 (D)4 (E) 5
27. The coordination number of Au in complex [(Et3P)AuTi(CO)6]- is 2. What is the geometry in Ti atom? (A) Octahedral (B) Capped trigonal prismatic (C) Capped octahedral (D) Pentagonal bipyramidal (E) Square pyramidal

28. Which one of the following complexes is pentagonal planar? (A)(B) (C) VO(acac)2 (D)(E) XeF5

29. The has a geometry of (A) Tricapped trigonal prism (B) Capped square antiprisn (C) Capped octaherdon (D) Trigonal dodechedron (E) None of above
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)

41.Predict the numbers of C-O and C-N stretches in cis-. (A)2,3 (B)2,4(C)1,3 (D)2,1 (E) 2,2

42. The NO (nitrosy1) ligand shares many similarities with CO. Which of the following statements is NOT correct? (A) Like CO, it's a o donor and π acceptor and can serve as terminal or bridging ligand. (B) NO has two common coordination modes； linear and bent. (C) Linear NO is counted as a 2-electron donor, same as CO. (D) has been used as a vasodilator for the treatment of high blood pressure. (E) Cr(NO)4 is tetrahedral molecule.

43. All five complexes followed 18E rule. Which one has the largest ? (A) (B) (C) Cr(CO)6 (D) (E)
44. What is the bond order in complexes Cp2Mo2(CO)4? (A)1 (B)1.5 (C)2 (D) 2.5(E)3

45. How many bridging u-CO in ? (A)0(B)1 (C)2 (D)3 (E) 4

46. The reaction of Re(CO)5Br with the ion BrCH2CH2O- gave compound Y and Br-. Which one the following statement is NOT correct. (A) The most likely site of attack of this ion is Re metal. (B) Y obeys 18e rule. (C) No gas is evolved in the reaction. (D) Addition of solution of Ag+ to a solution of Y gave a white ppt. (E) NMR indicates the there are five distinct magnetic environments for carbon in Y.

47. Upon heating, the complex (CO)3Mn(PPh3)2(13COMe) lost a gas, what is the gas? (A) (B) (C)and (D)(E) None of above

48. What is Wilkinson's catalyst? (A) HRh(CO)2(PPh3)2 (B)(C) cis-IrCl(CO)(PPh3)2 (D) trans-IrCI(CO)(PPh3)2 (E) RhCI(PPh3)3

49. The β abstraction of CpFe(CO)2(CMe2D) by gave major product CpFe(CO)2(DMeC=CH2)+ and Y. What is Y? (A) Ph3C-H (B) Ph3C-D (C) CH2=CDMe (D) MeCD=CD2(E) None of above
50. The reaction of Cp2Sc(CH3) + C6H6 → Cp2Sc(C6H5) + CH4 is best descried as (A) Oxidative addition (B) Reduction elimination (C) Nucleophilic displacement (D) Sigma bond metathesis (E) None of above

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