Everything about Molecular Physics totally explained
Molecular physics is the study of the physical properties of
molecules and of the
chemical bonds between
atoms that bind them. Its most important experimental techniques are the various types of
spectroscopy. The field is closely related to
atomic physics and overlaps greatly with
theoretical chemistry,
physical chemistry and
chemical physics.
Additionally to the electronic excitation states which are known from atoms, molecules are able to rotate and to vibrate. These rotations and vibrations are quantized, there are discrete
energy levels. The smallest energy differences exist between different rotational states, therefore pure rotational
spectra are in the far
infrared region (about 30 - 150
µm wavelength) of the
electromagnetic spectrum. Vibrational spectra are in the near infrared (about 1 - 5 µm) and spectra resulting from electronic transitions are mostly in the visible and
ultraviolet regions. From measuring rotational and vibrational spectra properties of molecules like the distance between the nuclei can be calculated.
One important aspect of molecular physics is that the essential
atomic orbital theory in the field of atomic physics expands to the
molecular orbital theory.
Further Information
Get more info on 'Molecular Physics'.
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