(a)
Interpretation:
The molecule from the given pair of molecule that possesses the fewer different vibrational frequency is to be stated.
Concept introduction:
The vibration of the atoms present in a molecule takes place in a periodic motion and that molecule possess the constant rotational and translational motions then it is known as a vibrational frequency of a molecule.
(b)
Interpretation:
The molecule from the given pair of molecule that possesses the fewer different vibrational frequency is to be stated.
Concept introduction:
The vibration of the atoms present in a molecule takes place in a periodic motion and that molecule possess the constant rotational and translational motions then it is known as a vibrational frequency of a molecule.
(c)
Interpretation:
The molecule from the given pair of molecule that possesses the fewer different vibrational frequency is to be stated.
Concept introduction:
The vibration of the atoms present in a molecule takes place in a periodic motion and that molecule possess the constant rotational and translational motions then it is known as a vibrational frequency of a molecule.
(d)
Interpretation:
The molecule from the given pair of molecule that possesses the fewer different vibrational frequency is to be stated.
Concept introduction:
The vibration of the atoms present in a molecule takes place in a periodic motion and that molecule possess the constant rotational and translational motions then it is known as a vibrational frequency of a molecule.
(e)
Interpretation:
The molecule from the given pair of molecule that possesses the fewer different vibrational frequency is to be stated.
Concept introduction:
The vibration of the atoms present in a molecule takes place in a periodic motion and that molecule possess the constant rotational and translational motions then it is known as a vibrational frequency of a molecule.
Want to see the full answer?
Check out a sample textbook solutionChapter 14 Solutions
Physical Chemistry
- 3. ^14N^16O (the superscripts represent the atomic mass number) (a) NO molecules rotate at an angular velocity of 2.01x10^12 rev/s, at the quantized rotational state with the rotational quantum number J of 3. Calculate the bond length of NO molecules. (b) Can NO molecules rotate under light irradiation? Explain your answer. (c) Calculate the effective force constant of the vibrational mode of NO at a frequency of 5.63x10^13 Hz measured by the infrared absorption spectrum. (d) NO has a bond energy of 6.29 eV. Applying the parabolic approximation to estimate the longest distance in which N and O atoms can be stretched before the dissociation of the molecular bondarrow_forward4. The vibrational frequency of 'H³°C1 is 8.963 x 1013 Hz. What is the force X constant of the bond in this molecule?arrow_forward6. The NaH molecule undergoes a rotational transition from J=0 to J=1 when it absorbs a photon of frequency 2.94×10' Hz. What is the equilibrium bond length of the molecule?arrow_forward
- 2. Molecules absorb IR radiation consistent with vibrational energy and rotational energy. Which of these is present in condensed phases (liquid, solution, solid)?arrow_forwardHow many vibrational modes are there for the molecule NC–(C≡C–C≡C–)8CN detected in an interstellar cloud?arrow_forwardIndicate whether each statement is true or false. The larger the number of atoms in a molecule, the more degrees of freedom of rotational and vibrational motion it likely has.arrow_forward
- (hydrogen iodide, the superscripts represent the atomic mass number) (a) How fast will HI molecules rotate at the quantized rotational state with the rotational quantun number J of 2, given the bond length of 0.161 nim? (b) Calculate the effective force constant of the vibrational mode of HI at a wavenumber of 2300 cm' measured by infrared absorption spectrum. (c) HI has the bond energy of 3.06 eV. Applying the parabolic approximation to estimate the longest distance in which H and I atoms can be stretched before the dissociation of the molecular bondarrow_forward(A) Explain why the spacings between the bands in the vibrational spectrum of a diatomic molecule would be expected to decrease with increasing vibrational quantum number. (B) Explain why a molecule with no dipole moment is microwave inactive but may show an infrared spectrum. (C) Explain the occurrence of P and R branches in the rotational fine structure of a vibrational transition of a diatomic molecule such as HCl or CO.arrow_forwardAccording to free-electron molecular orbital theory, the electrons in molecular are regarded as independent particle that in a box with the length L. (a)Draw two molecular orbital shape occupied at butadiene predicted by this model and predict the minimum excitation energy of the molecular. Tetraene can be considered a box with the length 8R, R is 140pm.(b)Calculate the minimum excitement energy and draw HOMO and LUMO.please explain the problem (a) and (b).arrow_forward
- Rotational spectra are affected slightly by the fact that different isotopes have different masses. Suppose a sample of the common isotope 1H35Cl is changed to 1H37Cl. (a) By what fraction is the molecule’s rotational inertia different? (The bond length is 0.127 nm in each case.) (b) What is the change in energy of theℓ = 1 to theℓ = 0 transition if the isotope is changed?arrow_forwardβ-Carotene (1) is a linear polyene in which 10 sing le and 11 double bonds alternate along a chain of 22 carbon atoms. If the length of each CC bond is taken to be about 140 pm , then the length L of the molecular box in β-carotene is L = 2.94 nm. Estimate the wavelength of the light absorbed bythis molecule when it undergoes a t rans it ion from its ground state to the next higher excited state.arrow_forward9. Consider the ethyl iodide molecule, CH CH₂, which of the statements below is correct? (A) CH, protons are more deshielded. (B) The energy gap between a and ß spin states of CH₂ protons is smaller than the counterpart of CH; protons. (C) The electronegative element I shields the CH₂ protons. (D) None of the above.arrow_forward
- Chemistry: The Molecular ScienceChemistryISBN:9781285199047Author:John W. Moore, Conrad L. StanitskiPublisher:Cengage Learning