Homework Answers
a & b Vibrational relaxation – (non-radiative) transition of an electron from higher vibrational state to lower vibrational state.
c & d Internal conversion – (non-radiative) relaxation from higher vibrational states at higher energy levels to lower vibrational levels in lower energy states.
e Absorption – energy is absorbed to excite the electron from lower energy levels to higher energy levels. (radiative)
f & g – refers to again vibrational relaxation
h & i – fluorescence (radiative)emission from the same spin state
j & k – Intersystem Crossing(non-radiative) the electron transition takes place from higher singlet energy state to triplet state.
l & m – Vibrational relaxation
n,o & p – phosphorescence – relaxation from triplet to ground singlet state.
A) pathway e(absorption) g(vibrational relaxation) i(fluoroscence) or h
B) e(absorption) & i(flouroscence) via vibrational relaxations within the excited energy level
C) e(absorption),j(intersystem crossing),m(vibrational relaxation) & p(phosphoroscence)
5. a) [i] corresponds to higher energy fluroscence hence shorter wavelength.
b) [n] corresponds to longest wavelength
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Energy So 6 M 4. (a) Using only the arrows in the diagram, give the most...
Can you help me with number 4 Please and Thank You (2) The simplified electronic/vibrational/rotational energy...
Can you help me with number 4 Please and Thank You
(2) The simplified electronic/vibrational/rotational energy level diagram for a molecule (called a Jablonski diagram) is shown below. Transitions involving photons are shown with wavy arrows. Arrow (a) represents 319 kJ mol-1. In this simplified example the energy levels in the singlet states and triplet states are equally spaced but in a real molecule they become closer together at higher energy. Use this diagram for questions 2-5. Energy So de...
(10 points) Draw a molecular energy diagram of the ground electronic state (S) and the first...
(10 points) Draw a molecular energy diagram of the ground electronic state (S) and the first excited state (Si) including some vibrational levels (V) in each electronic state. Show the following transitions on the diagram and briefly explain each transition (a) (b) @a resonant absorption fluorescence phosphorescence intersystem crossing non-radiative decay
A molecule which has absorbed a photon of energy in the visible range could move from...
A molecule which has absorbed a photon of energy in the visible range could move from the excited electronic state (S1) to a highly excited vibrational level of the ground state (So) with the same energy. What is this process called? O a. fluorescence O b.internal conversion O C. vibrational relaxation d. intersystem crossing
In the ro-vibrational model for spectra of diatomic molecules, the total rotational and vibrational energy for...
In the ro-vibrational model for spectra of diatomic molecules, the total rotational and vibrational energy for a given state is: Évj = ū(v + 3) + BJC +1) (Equation 1) where v is the vibrational quantum number and J is the rotational quantum number. Complete the following steps to create a model energy level diagram for a hypothetical diatomic molecule with ✓ = 2000 cm-1 and B = 1 cm-1. i) Draw a horizontal line to represent the ground vibrational...
The energy needed to ionize an atom of Si when it is in its most stable...
The energy needed to ionize an atom of Si when it is in its most stable state is 7864 kJ mor. However, if an atom of Si is in a certain low-lying excited state, only 310.8 kJ mol1 is needed to ionize it. What is the wavelength of the radiation emitted when an atom of Si undergoes a transition from this excited state to the ground state? nm
4&5 only thnkyouu :) 3. The force constant for 119F molecule is 966 N/m. a) Calculate...
4&5 only
thnkyouu :)
3. The force constant for 119F molecule is 966 N/m. a) Calculate the zero-point vibrational energy using a harmonic oscillator potential. b) Calculate the frequency of light needed to excite this molecule from the ground state to the first excited state. 4. Is 41(x) = *xe 2 an eigenfunction for the kinetic energy operator? Is it an eigenfunction for potential energy operator? 5. HCI molecule can be described by the Morse potential with De = 7.41...
The energy needed to ionize an atom of Na when it is in its most stable...
The energy needed to ionize an atom of Na when it is in its most stable state is 495.8 kJ mol-1. However, if an atom of Na is in a certain low-lying excited state, only 293.0 kJ mol-1 is needed to ionize it. What is the wavelength of the radiation emitted when an atom of Na undergoes a transition from this excited state to the ground state? nm
The energy needed to ionize an atom of Zn when it is in its most stable...
The energy needed to ionize an atom of Zn when it is in its most stable state is 906.4 kJ mol. However, if an atom of Zn is in a certain low-lying excited state, only 347.2 kJ mol is needed to ionize it. What is the wavelength of the radiation emitted when an atom of Zn undergoes a transition from this excited state to the ground state? nm Submit Answer 5 question attempts remaining
Please include explanations so that I can learn how to do this type of problem: Selection rules Using arrows, show all the transitions allowed for the sodium levels available in the diagram Energy...
Please include explanations so that I can learn how to
do this type of problem:
Selection rules Using arrows, show all the transitions allowed for the sodium levels available in the diagram Energy (eV) l=0 l=1 l=2 l=3 Ionization limit 5.14 eV 4.51 4.11 5p 4.34 4.29 4f 4.28 5s 3.75 4 3.62 3.19 4s First excited state 2.104 2 Energies for each level are in eV Ground state at E 0 0.00 0-3s Filled 1s, 2s, and 2p levels...
(6) The rate of fluorescence process is the rate of UV absorption process. The rate of...
(6) The rate of fluorescence process is the rate of UV absorption process. The rate of fluorescence process is A the rate of phosphorescence process. ster than (b) slower than (c) about the same as (8) The C = Ö group in acetone (CH3CO CH3) has a strong absorption line at 189 nm, and a weak absorption line at 280 nm. The line at 280 nm corresponds to a transition; and the line at 189 nm corresponds to a_ B....
Can you help me with number 4 Please and Thank You
(2) The simplified electronic/vibrational/rotational energy level diagram for a molecule (called a Jablonski diagram) is shown below. Transitions involving photons are shown with wavy arrows. Arrow (a) represents 319 kJ mol-1. In this simplified example the energy levels in the singlet states and triplet states are equally spaced but in a real molecule they become closer together at higher energy. Use this diagram for questions 2-5. Energy So de...
(10 points) Draw a molecular energy diagram of the ground electronic state (S) and the first excited state (Si) including some vibrational levels (V) in each electronic state. Show the following transitions on the diagram and briefly explain each transition (a) (b) @a resonant absorption fluorescence phosphorescence intersystem crossing non-radiative decay
A molecule which has absorbed a photon of energy in the visible range could move from the excited electronic state (S1) to a highly excited vibrational level of the ground state (So) with the same energy. What is this process called? O a. fluorescence O b.internal conversion O C. vibrational relaxation d. intersystem crossing
In the ro-vibrational model for spectra of diatomic molecules, the total rotational and vibrational energy for a given state is: Évj = ū(v + 3) + BJC +1) (Equation 1) where v is the vibrational quantum number and J is the rotational quantum number. Complete the following steps to create a model energy level diagram for a hypothetical diatomic molecule with ✓ = 2000 cm-1 and B = 1 cm-1. i) Draw a horizontal line to represent the ground vibrational...
The energy needed to ionize an atom of Si when it is in its most stable state is 7864 kJ mor. However, if an atom of Si is in a certain low-lying excited state, only 310.8 kJ mol1 is needed to ionize it. What is the wavelength of the radiation emitted when an atom of Si undergoes a transition from this excited state to the ground state? nm
4&5 only
thnkyouu :)
3. The force constant for 119F molecule is 966 N/m. a) Calculate the zero-point vibrational energy using a harmonic oscillator potential. b) Calculate the frequency of light needed to excite this molecule from the ground state to the first excited state. 4. Is 41(x) = *xe 2 an eigenfunction for the kinetic energy operator? Is it an eigenfunction for potential energy operator? 5. HCI molecule can be described by the Morse potential with De = 7.41...
The energy needed to ionize an atom of Zn when it is in its most stable state is 906.4 kJ mol. However, if an atom of Zn is in a certain low-lying excited state, only 347.2 kJ mol is needed to ionize it. What is the wavelength of the radiation emitted when an atom of Zn undergoes a transition from this excited state to the ground state? nm Submit Answer 5 question attempts remaining
Please include explanations so that I can learn how to
do this type of problem:
Selection rules Using arrows, show all the transitions allowed for the sodium levels available in the diagram Energy (eV) l=0 l=1 l=2 l=3 Ionization limit 5.14 eV 4.51 4.11 5p 4.34 4.29 4f 4.28 5s 3.75 4 3.62 3.19 4s First excited state 2.104 2 Energies for each level are in eV Ground state at E 0 0.00 0-3s Filled 1s, 2s, and 2p levels...
(6) The rate of fluorescence process is the rate of UV absorption process. The rate of fluorescence process is A the rate of phosphorescence process. ster than (b) slower than (c) about the same as (8) The C = Ö group in acetone (CH3CO CH3) has a strong absorption line at 189 nm, and a weak absorption line at 280 nm. The line at 280 nm corresponds to a transition; and the line at 189 nm corresponds to a_ B....
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