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Transition Metals

70 questions · Chemistry · IIT JAM
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Transition Metals

70 questions · Chemistry · IIT JAM

  1. Wilkinson’s catalyst contains2025 · Q17 · MCQ
  2. The correct statement(s) about the octahedral Mn-complex with spin only magnetic moment of approximately 6.0 μB​ is(are)2025 · Q33 · Multiple correct
  3. For [Mn(CO)6​]+ and [V(CO)6​]− complexes, the correct statement(s) is(are)2025 · Q34 · Multiple correct
  4. A yellow compound X is produced after the reaction of K₂[Ni(CN)₄] with excess of K/liq. NH₃ at −33 °C. The oxidation state of Ni in the compound X is ​.2025 · Q43 · Numerical
  5. Number of spin allowed transition(s) possible for d² octahedral configuration is ​.2025 · Q44 · Numerical
  6. The correct trend of acidity of the ions is2025 · Q5 · MCQ
  7. For the reaction shown below 21​Mn2​(CO)10​+Na⟶Na[Mn(CO)5​]CH3​Cl−NaCl​[CH3​Mn(CO)5​] P Q the oxidation…2024 · Q24 · MCQ
  8. The number and nature of d−d transition(s) in the case of Sc2+ in an octahedral crystal field, respectively, are [Ignore spin-orbit coupling and Jahn-Teller distortion.]2024 · Q25 · MCQ
  9. The d−d transitions in [Mn(H2​O)6​]2+ and [Ti(H2​O)4​]3+, respectively, are [Ignore spin-orbit coupling and Jahn-Teller distortion.]2024 · Q26 · MCQ
  10. The correct statement(s) about the ligand substitution/exchange reaction is/are2024 · Q39 · Multiple correct
  11. The stretching frequency of CO in H₃B·CO is2024 · Q40 · Multiple correct
  12. Among [Ti(H2​O)6​]3+, [NiCl4​]2−, [CrO4​]2−, and [Mn(H2​O)6​]2+, the complex that exhibits the largest molar absorptivity in the visible region of the electronic…2024 · Q7 · MCQ
  13. [Co(NH₃)₅(SO₄)]Br and [Co(NH₃)₅Br]SO₄ are examples of2024 · Q8 · MCQ
  14. The transition metal (M) complex that can have all isomers (geometric, linkage, and ionization) is2023 · Q24 · MCQ
  15. The geometry of [VO(acac) 2​] is2023 · Q25 · MCQ
  16. The correct order of the energy of the d orbitals of a square planar complex is2023 · Q27 · MCQ
  17. The correct statement(s) about the complexes **I** (K₃[CoF₆]) and **II** (K₃[RhF₆]) is/are2023 · Q39 · Multiple correct
  18. The number of valence electrons in Na 2​[Fe(CO) 4​] (the Colman's reagent) is ​.2023 · Q48 · Numerical
  19. The spin-only magnetic moment of [Fe(acac)₃] is ​ μB.2023 · Q58 · Numerical
  20. The ground state and the maximum number of spin-allowed electronic transitions possible in a Co^{2+} tetrahedral complex, respectively, are2022 · Q18 · MCQ
  21. The order of increasing CO stretching frequencies in [Co(CO)_{4}]^{-}, [Cu(CO)_{4}]^{+}, [Fe(CO)_{4}]^{2-} and [Ni(CO)_{4}] is2022 · Q20 · MCQ
  22. The number of CO stretching bands in the infrared spectrum of Fe(CO)_{5} is2022 · Q29 · MCQ
  23. The reaction involve(s)2022 · Q35 · Multiple correct
  24. The number of unpaired electrons in [Co(H_{2}O)_{6}]^{2+} is ​.2022 · Q46 · Numerical
  25. The complex that does NOT obey the 18-electron rule is (Given: Atomic numbers of Ti, Mn, Ta and Ir are 22, 25, 73 and 77, respectively)2021 · Q12 · MCQ
  26. Reaction of [Ni(CN)₄]²⁻ with metallic potassium in liquid ammonia at –33 °C yields complex E. The geometry and magnetic behavior of E, respectively, are2021 · Q14 · MCQ
  27. The decreasing order of C=C bond length in the following complexes is [Cl₃Pt(CH₂=CH₂)]⁻ [Cl₃Pt(C(CN)₂=C(CN)₂)]⁻ [Cl₃Pt(CF₂=CH₂)]⁻ [Cl₃Pt(CF₂=CF₂)]⁻ I II III IV2021 · Q15 · MCQ
  28. According to the crystal field theory, d−d transition observed in [Ti(H2​O)6​]3+ is2021 · Q17 · MCQ
  29. Spin-only magnetic moments (in BM) of [NiCl2​(PPh3​)2​] and [Mn(NCS)6​]4−, respectively, are2021 · Q3 · MCQ
  30. The CORRECT statement(s) about the species is (are)2021 · Q31 · Multiple correct
  31. The complex(es) that show(s) Jahn-Teller distortion is (are)2021 · Q32 · Multiple correct
  32. The CORRECT statement(s) about sodium nitroprusside is (are)2021 · Q33 · Multiple correct
  33. The total number of optically active isomers of dichloridobis(glycinato)cobaltate(III) ion is2021 · Q41 · Numerical
  34. If the crystal field splitting energy of [Co(NH₃)₄]²⁺ is 5900 cm⁻¹, then the magnitude of its crystal field stabilization energy, in kJ mol⁻¹ (rounded off to one decimal place), is ​.2021 · Q51 · Numerical
  35. The order of the M–C bond strength in the following species is (Atomic number for Cr = 24, Mn = 25, Ti = 22, Co = 27) [Cr(CO)6​][Mn(CO)6​]+[Ti(CO)6​]2−[Co(CO)4​]−…2020 · Q18 · MCQ
  36. The complex which does NOT obey 18-electron rule is (atomic number for Mn = 25, Fe = 26, Co = 27, Ru = 44)2020 · Q21 · MCQ
  37. The number of d−d transition(s) expected for the complex [Cu(NH3​)2​(H2​O)4​]2+ is2020 · Q23 · MCQ
  38. The transition metal complex(es) with zero magnetic moment, zero dipole moment and CFSE of -2.4 Δ₀ is(are)2020 · Q36 · Multiple correct
  39. The total number of all possible isomers of [Co(H2​NCH2​CH2​NH2​)2​Cl2​]+ and [Co(H2​NCH2​CH2​NH2​)3​]3+ together is ​2020 · Q46 · Numerical
  40. Titanium tetrachloride (TiCl₄) reacts with THF to form an octahedral complex X under inert atmosphere at 25 °C. If 5.0 g of TiCl₄ is used and the yield is 80%, the amount of X (in grams) formed is ​ (Round off to…2020 · Q58 · Numerical
  41. The correct trend in the rate of substitution of Cl − by pyridine in the following complexes is (I) (II) (III) (IV) Includes diagram2019 · Q17 · MCQ
  42. The observed magnetic moments of octahedral Mn³⁺, Fe³⁺ and Co³⁺ complexes are 4.95, 6.06 and 0.00 BM, respectively. The correct option for the electronic configuration of Mn³⁺, Fe³⁺ and Co³⁺ metal ions in these complexes, respectively, is2019 · Q20 · MCQ
  43. The correct option having one complex from each of the following pairs which is more reactive towards the oxidative addition reaction by hydrogen molecule is Pair 1: IrCl(PMe₃)₃ (I) and IrCl(CO)(PMe₃)₂ (II) Pair 2: IrCl(CO)(PPh₃)₂ (III)…2019 · Q22 · MCQ
  44. The value of n for the complex [Fe(CO)₄(SiMe₃)]ⁿ satisfying the 18-electron rule is ​.2019 · Q45 · Numerical
  45. The correct order of wavelength (λmax) of the halide to metal charge-transfer band of [Co(NH3)5Cl]2+ (I), [Co(NH3)5Br]2+ (II) and [Co(NH3)5I]2+ (III), is2019 · Q7 · MCQ
  46. Among the following metal carbonyl species, the one with the highest metal-carbon back bonding is2018 · Q13 · MCQ
  47. The CORRECT order of Δo​ (the octahedral crystal field splitting of d orbitals) values for the following anionic metal complexes is2018 · Q14 · MCQ
  48. The number of possible isomers for [Pt(py)(NH₃)BrCl] is ​. (py is pyridine)2018 · Q41 · Numerical
  49. The magnitude of crystal field stabilization energy (CFSE) of octahedral [Ti(H2​O)6​]3+ complex is 7680 cm −1. The wavelength at the maximum absorption (λmax​) of this complex is nm…2018 · Q53 · Numerical
  50. The homogeneous catalyst used in water-gas shift reaction is2017 · Q13 · MCQ
  51. Nitrosyl ligand binds to d-metal atoms in linear and bent fashion and behaves, respectively, as2017 · Q14 · MCQ
  52. The correct order of wavelength of absorption (λmax​) of the Cr-complexes is (en = ethylenediamine)2017 · Q16 · MCQ
  53. The correct order of enthalpy of hydration for the transition metal ions is2017 · Q17 · MCQ
  54. Jahn-Teller distortion is observed in octahedral complexes with d-electron configuration of2017 · Q34 · Multiple correct
  55. The number of unpaired electron(s) in K2​NiF6​ is2017 · Q43 · Numerical
  56. The TRUE statement about [Cu(H₂O)₆]²⁺ is2016 · Q17 · MCQ
  57. The complexes [Pt(CN)₄]²⁻ and [NiCl₄]²⁻, respectively, are2016 · Q18 · MCQ
  58. The value of 'x' in [Cu(CO)ₓ]⁺ such that it obeys the 18 electron rule is2016 · Q19 · MCQ
  59. The red color of ruby is due to2016 · Q21 · MCQ
  60. The ion(s) that exhibit only charge transfer bands in the absorption spectra (UV-visible region) is(are)2016 · Q36 · Multiple correct
  61. The crystal field stabilization energy (CFSE) in [Mn(H₂O)₆]²⁺ is2016 · Q5 · MCQ
  62. The total number of isomers possible for the molecule [Co(NH3​)4​Cl(NO2​)]+ is __.2016 · Q55 · Numerical
  63. The first row transition metal complexes having tetrahedral geometry are high-spin due to2015 · Q1 · MCQ
  64. The normal spinel among the following mixed metal-oxides is2015 · Q11 · MCQ
  65. The ground state term for a free ion with 3d 7 configuration is2015 · Q12 · MCQ
  66. A filter paper moistened with cadmium acetate solution turns yellow upon exposure to H 2​ S. The transition responsible for the yellow colour is2015 · Q3 · MCQ
  67. The complex that is expected to show orbital contribution to the overall magnetic moment is2015 · Q30 · MCQ
  68. Which of the following statement(s) is/are true about the transition metal-alkene complexes?2015 · Q33 · Multiple correct
  69. Given that the crystal field stabilization energy for [Co(H2​O)6​]2+ is 7360 cm−1, the calculated value of Δ0​ in kJ mol −1 is ​2015 · Q41 · Numerical
  70. Given that the expected spin-only magnetic moment for (Et4​N)2​[NiCl4​] is 2.83μB​, the total number of unpaired electrons in this complex is ​2015 · Q43 · Numerical