The linear ethylene molecule CH2=CH2 can be considered as a molecular box with length defined by...
The linear ethylene molecule CH2=CH2 can be considered as a molecular box with length defined by the C=C length: 0.154 nm. How many declocalized electrons are confined in this molecular box? Use a drawing, sketch , etc. to show how you decided. Draw the energy level diagram of these electrons states in ethylene and show the electrons that occupy them.
Homework Answers
Add Answer to:
The linear ethylene molecule CH2=CH2 can be considered as a
molecular box with length defined by...
3. You have a gas of 10 particles confined in a rigid 1D box of length L-1nm-10 °m. a) Sketch an ...
3. You have a gas of 10 particles confined in a rigid 1D box of length L-1nm-10 °m. a) Sketch an energy level diagram for the lowest five energies (including a quantitative calculation of the energy levels) if these are electrons and they are in their lowest lying state. How many electrons are in each level and what is their state? b) Sketch an energy level diagram for the lowest five levels (including a quantitative calculation of the energy levels)...
Problem 1 Assume r-electrons in benzene can be modelled according to a 2D particle in box model. ...
Problem 1 Assume r-electrons in benzene can be modelled according to a 2D particle in box model. The box can be assumed square with the side of 5 Angstrom. Assume each C atom contributes only 1 electron. a) Sketch qualitatively the energy levels diagram for the up to 5 energy states (count degenerate states as one). b) Compute the HOMO-LUMO gap [in eV. c) How much do the conclusions above would change if we assume a non-zero thickness (e.g. 0.5...
Problem 1 Assume m-electrons in benzene can be modelled according to a 2D particle in box model. ...
Problem 1 Assume m-electrons in benzene can be modelled according to a 2D particle in box model. The box can be assumed square with the side of 5 Angstrom. Assume each C atom contributes only 1 electron a) Sketch qualitatively the energy levels diagram for the up to 5 energy states (count degenerate states as one). b) Compute the HOMO-LUMO gap [in eV] c) How much do the conclusions above would change if we assume a non-zero thickness (e.g.0.5 Angstrom)...
Consider the diatomic molecule NF. (a) Draw the shape of the 2 pz orbital on N....
Consider the diatomic molecule NF. (a) Draw the shape of the 2 pz orbital on N. How many nodes does this orbital have? Show the nodes in your diagram. (b) Construct a molecular orbital energy diagram for NF. For this drawing consider both the s and p valence orbitals on each atom, but do not include orbital mixing. Show how the electrons are placed in the MO's. (c) How would orbital mixing alter the MO energy diagram you just constructed?...
3. [5] Retinal consists of a chain of carbon atoms roughly 1.5 nm long. Electrons in...
3. [5] Retinal consists of a chain of carbon atoms roughly 1.5 nm long. Electrons in this long chain molecule behave very much like particles in a box The retinal molecule is a linear molecule that has 12 electrons that are free to move about the chain According to the Pauli exclusion principle, when this molecule is in its ground state, these 12 electrons fill the first 6 states of the box. Thus, the lowest energy photon that can be...
Molecular Rotations a. The wavefunction of rotations of diatomic molecules according to the rigid rotor approximation...
Molecular Rotations a. The wavefunction of rotations of diatomic molecules according to the rigid rotor approximation are spherical harmonics. Where have you seen spherical harmonics before? What are the quantum numbers that specify the wavefunctions for the rotational quantum states of a diatomic molecule? b. What are the gross and specific selection rules for pure rotational spectroscopy of a diatomic molecule? What region of the spectrum is used spectroscopy? What are the rotational energy levels for diatomic molecules and spherical...
b) Is CO paramagnetic or diamagnetic? What is the bond order of CO? c) Draw a Lewis structure...
Draw an energy-level diagram for the valence molecular orbitals of CO. Include the relevant atomic orbitals in your diagram. Clearly label each molecular orbital (e.gs2s, p2p, etc.) and fill in the appropriate number of electrons. Use the same energy order as the neutral O2 molecule.b) Is CO paramagnetic or diamagnetic? What is the bond order of CO? c) Draw a Lewis structure for CO. Does this match the predicted bond order? d) CO can react withOH– to form the formate...
11. The molecule methane, representation of the four C-H bonds is formed T2 irreducible representation. How...
11. The molecule methane, representation of the four C-H bonds is formed T2 irreducible representation. How predict and Raman active C-H stretching vibratio 33 to the Ta point group (found below). The reducible our C-H bonds is formed from one A irreducible representation and one presentation. How many infrared active C-H stretching vibrations would you Raman active C-H stretching vibrations would you predict for CHA? (4 points) Character table for T, point group Esc, 3c, 6s, 600 A1 1 1...
NAME Physical Chemistry Test 2 Instructions: Do FIVE of the following problems Your best problem ...
6,7,8
NAME Physical Chemistry Test 2 Instructions: Do FIVE of the following problems Your best problem will be graded out of points Your third best will be graded out of 20 points Your fifth best will be graded out of 10 peints f30 pointsYour second best will be graded out of 25 points Your fourth best will be graded out of 15 points 1. The work function of uranium is 3.73 ev a. Caculate the maximum photon wavelength needed to...
TACTICS BOX 1.5 Drawing a pictorial representation Draw a motion diagram. The motion diagram develops your...
TACTICS BOX 1.5 Drawing a pictorial representation
Draw a motion diagram. The motion diagram
develops your intuition for the motion and, especially important,
determines whether the signs of v? and
a? are positive or negative.
Establish a coordinate system. Select your axes
and origin to match the motion. For one-dimensional motion, you
want either the x axis or the y axis parallel to
the motion.
Sketch the situation. Not just any sketch. Show
the object at the beginning of the motion, at...
3. You have a gas of 10 particles confined in a rigid 1D box of length L-1nm-10 °m. a) Sketch an energy level diagram for the lowest five energies (including a quantitative calculation of the energy levels) if these are electrons and they are in their lowest lying state. How many electrons are in each level and what is their state? b) Sketch an energy level diagram for the lowest five levels (including a quantitative calculation of the energy levels)...
Problem 1 Assume r-electrons in benzene can be modelled according to a 2D particle in box model. The box can be assumed square with the side of 5 Angstrom. Assume each C atom contributes only 1 electron. a) Sketch qualitatively the energy levels diagram for the up to 5 energy states (count degenerate states as one). b) Compute the HOMO-LUMO gap [in eV. c) How much do the conclusions above would change if we assume a non-zero thickness (e.g. 0.5...
Problem 1 Assume m-electrons in benzene can be modelled according to a 2D particle in box model. The box can be assumed square with the side of 5 Angstrom. Assume each C atom contributes only 1 electron a) Sketch qualitatively the energy levels diagram for the up to 5 energy states (count degenerate states as one). b) Compute the HOMO-LUMO gap [in eV] c) How much do the conclusions above would change if we assume a non-zero thickness (e.g.0.5 Angstrom)...
Consider the diatomic molecule NF. (a) Draw the shape of the 2 pz orbital on N. How many nodes does this orbital have? Show the nodes in your diagram. (b) Construct a molecular orbital energy diagram for NF. For this drawing consider both the s and p valence orbitals on each atom, but do not include orbital mixing. Show how the electrons are placed in the MO's. (c) How would orbital mixing alter the MO energy diagram you just constructed?...
3. [5] Retinal consists of a chain of carbon atoms roughly 1.5 nm long. Electrons in this long chain molecule behave very much like particles in a box The retinal molecule is a linear molecule that has 12 electrons that are free to move about the chain According to the Pauli exclusion principle, when this molecule is in its ground state, these 12 electrons fill the first 6 states of the box. Thus, the lowest energy photon that can be...
Molecular Rotations a. The wavefunction of rotations of diatomic molecules according to the rigid rotor approximation are spherical harmonics. Where have you seen spherical harmonics before? What are the quantum numbers that specify the wavefunctions for the rotational quantum states of a diatomic molecule? b. What are the gross and specific selection rules for pure rotational spectroscopy of a diatomic molecule? What region of the spectrum is used spectroscopy? What are the rotational energy levels for diatomic molecules and spherical...
11. The molecule methane, representation of the four C-H bonds is formed T2 irreducible representation. How predict and Raman active C-H stretching vibratio 33 to the Ta point group (found below). The reducible our C-H bonds is formed from one A irreducible representation and one presentation. How many infrared active C-H stretching vibrations would you Raman active C-H stretching vibrations would you predict for CHA? (4 points) Character table for T, point group Esc, 3c, 6s, 600 A1 1 1...
6,7,8
NAME Physical Chemistry Test 2 Instructions: Do FIVE of the following problems Your best problem will be graded out of points Your third best will be graded out of 20 points Your fifth best will be graded out of 10 peints f30 pointsYour second best will be graded out of 25 points Your fourth best will be graded out of 15 points 1. The work function of uranium is 3.73 ev a. Caculate the maximum photon wavelength needed to...
TACTICS BOX 1.5 Drawing a pictorial representation
Draw a motion diagram. The motion diagram
develops your intuition for the motion and, especially important,
determines whether the signs of v? and
a? are positive or negative.
Establish a coordinate system. Select your axes
and origin to match the motion. For one-dimensional motion, you
want either the x axis or the y axis parallel to
the motion.
Sketch the situation. Not just any sketch. Show
the object at the beginning of the motion, at...
Most questions answered within 3 hours.
-
Suppose that XX is a random variable with mean 16 and standard
deviation 5 . Also...
asked 23 seconds from now -
Calculate the number density of argon gas at a temperature of
24C and a pressure of...
asked 3 hours ago -
Alternative
Classification
How to Estimate
Probabilities from Data? ( For continuous Attributes)
And How to generate...
asked 3 hours ago -
An explosion breaks a 20.0-kg object into three parts. The
object is initially moving at a...
asked 4 hours ago -
Calculate the approximate number of residues of Rubisco, which
is involved in carbon fixation in plants,...
asked 5 hours ago -
Other decisions about scientific claims can have a much broader
impact.ENERGYarrow-10x10.png, environment, health, security - all...
asked 5 hours ago -
I need to write a research paper and work cited about this
topic: The United States...
asked 6 hours ago -
Hello! I was wondering if I could have some help?
If the vapor pressure of carvone...
asked 6 hours ago -
An economist wants to estimate the mean per capita income (in
thousands of dollars) for a...
asked 7 hours ago -
What would be the input/output characteristic of a circuit
obtained by putting two of your 2's-complementers...
asked 7 hours ago -
In Drosophila, the transition from the syncytial blastoderm
stage to the cellular blastoderm stage is a...
asked 7 hours ago -
Project management question:
Name 3 different types of resources (hint: humans are one
type)
asked 7 hours ago