3-If two optically active compounds have the same Cotton effect: a) they have the same absolute configuration. b) they have different absolute configurations. c) they are enantiomers. d) they are diasteriomers. 4- Which of the following compounds has optical activity? a) [Nicl b) Ni(NH₂)₂Cl₂ c) Ni(en), d) [Ni(NH₂)Cl₂] 5-Determine the ground state for the ion Ni* in octahedral fields. a. A b. T c. Ag d. Ta 6- The main selection rule in IR spectroscopy: a. spin multiplicity must stay the same b.gg transitions are not allowed the vibrations must change the bond angle d. there must be a change in the dipole moment
3-If two optically active compounds have the same Cotton effect: a) they have the same absolute configuration. b) they have different absolute configurations. c) they are enantiomers. d) they are diasteriomers. 4- Which of the following compounds has optical activity? a) [Nicl b) Ni(NH₂)₂Cl₂ c) Ni(en), d) [Ni(NH₂)Cl₂] 5-Determine the ground state for the ion Ni* in octahedral fields. a. A b. T c. Ag d. Ta 6- The main selection rule in IR spectroscopy: a. spin multiplicity must stay the same b.gg transitions are not allowed the vibrations must change the bond angle d. there must be a change in the dipole moment
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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please solve parts 6 and 3
![### Multiple Choice Questions on Spectroscopy and Coordination Compounds
**Q1) Choose the right answer in the next questions:**
1. **The compound with 3 electronic transitions in the UV-Visible spectrum:**
- a) [Cr(acacac)₃]
- b) [Cu(phthalocyanine)]
- c) [Co(NH₃)₅Cl]Cl₂
- d) [Co(en)₃]I₃
2. **In circular dichroism (CD), a plot is made between:**
- a) n₁ - n_D and λ
- b) E_r - E_D and λ
- c) Φ and λ
- d) n and λ
3. **If two optically active compounds have the same Cotton effect:**
- a) They have the same absolute configuration.
- b) They have different absolute configurations.
- c) They are enantiomers.
- d) They are diastereomers.
4. **Which of the following compounds has optical activity?**
- a) [NiCl₄]²⁻
- b) Ni(NH₃)₂Cl₂
- c) Ni(en)₃²⁺
- d) [Ni(NH₃)₄]²⁺
5. **Determine the ground state for the ion Ni²⁺ in octahedral fields:**
- a) ³A₂g
- b) ⁴T₁g
- c) ²A₂g
- d) ³T₂g
6. **The main selection rule in IR spectroscopy:**
- a) Spin multiplicity must stay the same.
- b) g -> g transitions are not allowed.
- c) The vibrations must change the bond angle.
- d) There must be a change in the dipole moment.
7. **The complex with a strong IR peak at around 1600 cm⁻¹**
- a) trans-[Cr(en)₂(H₂O)₂]Cl₃
- b) [Cr(NO₂)₄]⁻
- c) [Co(en)₃]³⁺
- d) [Cr(acac)₃]
**](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fcf64e34b-fbb1-4c40-ab67-aa53e3d2d5ea%2F2fe671ac-750e-4e8d-9ff0-67556bd18639%2F1s4ivsm_processed.jpeg&w=3840&q=75)
Transcribed Image Text:### Multiple Choice Questions on Spectroscopy and Coordination Compounds
**Q1) Choose the right answer in the next questions:**
1. **The compound with 3 electronic transitions in the UV-Visible spectrum:**
- a) [Cr(acacac)₃]
- b) [Cu(phthalocyanine)]
- c) [Co(NH₃)₅Cl]Cl₂
- d) [Co(en)₃]I₃
2. **In circular dichroism (CD), a plot is made between:**
- a) n₁ - n_D and λ
- b) E_r - E_D and λ
- c) Φ and λ
- d) n and λ
3. **If two optically active compounds have the same Cotton effect:**
- a) They have the same absolute configuration.
- b) They have different absolute configurations.
- c) They are enantiomers.
- d) They are diastereomers.
4. **Which of the following compounds has optical activity?**
- a) [NiCl₄]²⁻
- b) Ni(NH₃)₂Cl₂
- c) Ni(en)₃²⁺
- d) [Ni(NH₃)₄]²⁺
5. **Determine the ground state for the ion Ni²⁺ in octahedral fields:**
- a) ³A₂g
- b) ⁴T₁g
- c) ²A₂g
- d) ³T₂g
6. **The main selection rule in IR spectroscopy:**
- a) Spin multiplicity must stay the same.
- b) g -> g transitions are not allowed.
- c) The vibrations must change the bond angle.
- d) There must be a change in the dipole moment.
7. **The complex with a strong IR peak at around 1600 cm⁻¹**
- a) trans-[Cr(en)₂(H₂O)₂]Cl₃
- b) [Cr(NO₂)₄]⁻
- c) [Co(en)₃]³⁺
- d) [Cr(acac)₃]
**
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