chapt 22 | 暗記メーカー

暗記メーカー

chapt 22

10問 • 8ヶ月前

問題一覧

1

For a molecule with evenly spaced rotational energy levels EJ=BJ(J+1), the population of levels at temperature T will initially increase with J and then decrease. Why?

C. The energy increase eventually outweighs the Boltzmann factor

2

If a gas is confined in a cubic box of side L, how does the lowest translational energy level nx = ny = nz = 1) change when the side of the box is doubled?

D. It decreases by a factor of

3

Which molecular states are most significantly populated at room temperature (298 K) for a typical diatomic molecule like N₂?

C. Mostly ground vibrational and various rotational states

4

For a homonuclear diatomic molecule such * as H₂, the symmetry of the total wave function under exchange of nuclei must be:

C. Symmetric or antisymmetric depending on the nuclear spin

5

Which of the following statements about normal modes of vibration is true for nonlinear polyatomic molecules?

C. Each normal mode is a collective motion of all atoms in the molecule.

6

Which of the following best describes the quantization of translational energy for a particle in a 3D box of length L?

B. The energy levels are quantized and depend on the square of the quantum numbers.

7

What are the possible total nuclear spin states for the H₂ molecule?

C. 1 singlet and 3 triplet states

8

What is the total number of vibrational modes (normal modes) for a nonlinear molecule with N atoms?

D. 3N-6

9

Approximation allows the total energy to be expressed as the sum of translational, rotational, and vibrational components?

B. Born-Oppenheimer Approximation

10

How many rotational degrees of freedom does a nonlinear polyatomic molecule possess?

C. 3

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問題一覧

1

For a molecule with evenly spaced rotational energy levels EJ=BJ(J+1), the population of levels at temperature T will initially increase with J and then decrease. Why?

C. The energy increase eventually outweighs the Boltzmann factor

2

If a gas is confined in a cubic box of side L, how does the lowest translational energy level nx = ny = nz = 1) change when the side of the box is doubled?

D. It decreases by a factor of

3

Which molecular states are most significantly populated at room temperature (298 K) for a typical diatomic molecule like N₂?

C. Mostly ground vibrational and various rotational states

4

For a homonuclear diatomic molecule such * as H₂, the symmetry of the total wave function under exchange of nuclei must be:

C. Symmetric or antisymmetric depending on the nuclear spin

5

Which of the following statements about normal modes of vibration is true for nonlinear polyatomic molecules?

C. Each normal mode is a collective motion of all atoms in the molecule.

6

Which of the following best describes the quantization of translational energy for a particle in a 3D box of length L?

B. The energy levels are quantized and depend on the square of the quantum numbers.

7

What are the possible total nuclear spin states for the H₂ molecule?

C. 1 singlet and 3 triplet states

8

What is the total number of vibrational modes (normal modes) for a nonlinear molecule with N atoms?

D. 3N-6

9

Approximation allows the total energy to be expressed as the sum of translational, rotational, and vibrational components?

B. Born-Oppenheimer Approximation

10

How many rotational degrees of freedom does a nonlinear polyatomic molecule possess?

C. 3