9.2 Molecular Spectra

Vibrational and rotational levels of a diatomic molecule, the band structure of its absorption spectrum, and extracting bond length from line spacing.

University Physics Volume 3, 9.2 Molecular Spectra

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5 exercises

9.2 Exercise 1

What does the energy separation between absorption lines in a rotational spectrum of a diatomic molecule tell you?

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9.2 Exercise 3

Rank the energy spacing $\left(\Delta E\right)$ of the following transitions from least to greatest: an electron energy transition in an atom (atomic energy), the rotational energy of a molecule, or the vibrational energy of a molecule?

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9.2 Exercise 6

For the preceding problem, find the equilibrium separation of the H and Cl atoms. Compare this with the actual value.

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9.2 Exercise 8

The characteristic energy of the $\text{N}_{2}$ molecule is $2.48 \times 10^{−4} \text{eV}$ . Determine the separation distance between the nitrogen atoms

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9.2 Exercise 10

A diatomic $\text{F}_{2}$ molecule is in the $l = 1$ state. (a) What is the energy of the molecule? (b) How much energy is radiated in a transition from a $l = 2$ to a $l = 1$ state?

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