Physical Chemistry: Which of the following statements is true? A) A quantum mech

Question

Physical Chemistry:

Which of the following statements is true?

A) A quantum mechanical system with discrete energy levels behaves as if it has a continuous energy spectrum if the energy difference between energy levels E satisfies the relationship E < < kT.

B) A quantum mechanical system with discrete energy levels behaves as if it has a continuous energy spectrum if the energy difference between energy levels E satisfies the relationship E >> kT.

C) If the energy levels can not be distinguished in an experiment, the system has a continuous energy spectrum from the viewpoint of the observer.

D) If the energy levels can be distinguished in an experiment, the system has a continuous energy spectrum from the viewpoint of the observer.

Explanation / Answer

A and C

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