(a)
Interpretation:
Whether the molecule dimethylacetylene,
Concept introduction:
Nonlinear molecules can rotate in three independent and mutually perpendicular directions. It is not necessary that the rotation in one dimension is equivalent to rotations in the other two directions. The moment of inertia for each dimension of each rotation is usually different. If a molecule has three different moments of inertia, it is called an asymmetric top molecule. If a molecule has two of its three moments of inertia equal, it is called symmetric top molecule. If the two equal moments of inertia are lower than the unique moment of inertia, then the molecule is called oblate tops. If the two equal moments of inertia are higher than the unique moment of inertia, then the molecule is called prolate tops. For linear molecule, the moment of inertia along the molecular axis is zero. Spherical top molecules have no net dipole moment or net dipole moment is equal to zero.
(b)
Interpretation:
Whether the molecule sulfur hexafluoride,
Concept introduction:
Nonlinear molecules can rotate in three independent and mutually perpendicular directions. It is not necessary that the rotation in one dimension is equivalent to rotations in the other two directions. The moment of inertia for each dimension of each rotation is usually different. If a molecule has three different moments of inertia, it is called an asymmetric top molecule. If a molecule has two of its three moments of inertia equal, it is called symmetric top molecule. If the two equal moments of inertia are lower than the unique moment of inertia, then the molecule is called oblate tops. If the two equal moments of inertia are higher than the unique moment of inertia, then the molecule is called prolate tops. For linear molecule the moment of inertia along the molecular axis is zero. Spherical top molecules have no net dipole moment or net dipole moment is equal to zero.
(c)
Interpretation:
Whether the molecule phosphate ion,
Concept introduction:
Nonlinear molecules can rotate in three independent and mutually perpendicular directions. It is not necessary that the rotation in one dimension is equivalent to rotations in the other two directions. The moment of inertia for each dimension of each rotation is usually different. If a molecule has three different moments of inertia, it is called an asymmetric top molecule. If a molecule has two of its three moments of inertia equal, it is called symmetric top molecule. If the two equal moments of inertia are lower than the unique moment of inertia, then the molecule is called oblate tops. If the two equal moments of inertia are higher than the unique moment of inertia, then the molecule is called prolate tops. For linear molecule the moment of inertia along the molecular axis is zero. Spherical top molecules have no net dipole moment or net dipole moment is equal to zero.
(d)
Interpretation:
Whether the molecule glycine,
Concept introduction:
Nonlinear molecules can rotate in three independent and mutually perpendicular directions. It is not necessary that the rotation in one dimension is equivalent to rotations in the other two directions. The moment of inertia for each dimension of each rotation is usually different. If a molecule has three different moments of inertia, it is called an asymmetric top molecule. If a molecule has two of its three moments of inertia equal, it is called symmetric top molecule. If the two equal moments of inertia are lower than the unique moment of inertia, then the molecule is called oblate tops. If the two equal moments of inertia are higher than the unique moment of inertia, then the molecule is called prolate tops. For linear molecule the moment of inertia along the molecular axis is zero. Spherical top molecules have no net dipole moment or net dipole moment is equal to zero.
(e)
Interpretation:
Whether the molecule cis
Concept introduction:
Nonlinear molecules can rotate in three independent and mutually perpendicular directions. It is not necessary that the rotation in one dimension is equivalent to rotations in the other two directions. The moment of inertia for each dimension of each rotation is usually different. If a molecule has three different moments of inertia, it is called an asymmetric top molecule. If a molecule has two of its three moments of inertia equal, it is called symmetric top molecule. If the two equal moments of inertia are lower than the unique moment of inertia, then the molecule is called oblate tops. If the two equal moments of inertia are higher than the unique moment of inertia, then the molecule is called prolate tops. For linear molecule the moment of inertia along the molecular axis is zero. Spherical top molecules have no net dipole moment or net dipole moment is equal to zero.
(f)
Interpretation:
Whether the molecule trans
Concept introduction:
Nonlinear molecules can rotate in three independent and mutually perpendicular directions. It is not necessary that the rotation in one dimension is equivalent to rotations in the other two directions. The moment of inertia for each dimension of each rotation is usually different. If a molecule has three different moments of inertia, it is called an asymmetric top molecule. If a molecule has two of its three moments of inertia equal, it is called symmetric top molecule. If the two equal moments of inertia are lower than the unique moment of inertia, then the molecule is called oblate tops. If the two equal moments of inertia are higher than the unique moment of inertia, then the molecule is called prolate tops. For linear molecule the moment of inertia along the molecular axis is zero. Spherical top molecules have no net dipole moment or net dipole moment is equal to zero.
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Chapter 14 Solutions
Physical Chemistry
- 2. Molecules absorb IR radiation consistent with vibrational energy and rotational energy. Which of these is present in condensed phases (liquid, solution, solid)?arrow_forwardthe following figure shows the bond distances for the homonuclear diatomics of the 2 nd period p-block elements, as well as those for some of the ions derived from these species. i) Note that N 2 + has a longer bond distance than N 2, but O 2 + has a shorter bond distance than O 2. Explain this difference. ii) Estimate the bond distance of N 2 - and justify your answer.arrow_forwardMany of the colours of vegetation are due to electronic transit ions in conjugated π-electron systems. In the freeelectron molecular orbital (FEMO) theory. the electrons in a conjugated molecule are treated as independent particles in a box of length L. (a) Sketch the form of the two occupied orbitals in butadiene predicted by this model and predict the minimum excitation energy of the molecule. (b) In many cases. an extra half bond-length is often added at each end of the box. The tetraene CH2=CHCH=CHCH=CHCH=CH2 can therefore be t reated as a box of length 8R. where R = 140 pm. Ca lcu late the minimum excitation energy of the molecule and sketch the HOMO and LUMO.arrow_forward
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- Chemistry: The Molecular ScienceChemistryISBN:9781285199047Author:John W. Moore, Conrad L. StanitskiPublisher:Cengage LearningChemistry & Chemical ReactivityChemistryISBN:9781337399074Author:John C. Kotz, Paul M. Treichel, John Townsend, David TreichelPublisher:Cengage Learning