What are the differences between atomic spectrum and molecular spectrum?
The key difference between atomic spectroscopy and molecular spectroscopy is that the atomic spectroscopy refers to the study of the electromagnetic radiation absorbed and emitted by atoms whereas the molecular spectroscopy refers to the study of the electromagnetic radiation absorbed and emitted by molecules.
What is the difference between atomic emission and molecular emission?
Emission by excited atoms in the vapor state is measured in atomic emission spectroscopy, used most often for the determination of metals. In molecular fluorescence molecules are excited by UV radiation and emit at longer wavelengths. In chemiluminescence measurements, emission is stimulated by a chemical reaction.
Why molecular spectra is more complicated than atomic spectra?
Molecular spectra result from either the absorption or the emission of electromagnetic radiation as molecules undergo changes from one quantized energy state to another. The mechanisms involved are similar to those observed for atoms but are more complicated.
How does atomic spectrum affect elements?
When atoms are excited they emit light of certain wavelengths which correspond to different colors. Each element produces a unique set of spectral lines. Since no two elements emit the same spectral lines, elements can be identified by their line spectrum.
What is the kind of atomic spectrum?
There are three types of atomic spectra and they are emission spectra, absorption spectra, and continuous spectra.
Is atomic spectroscopy better than molecular spectroscopy?
Whereas atomic spectra involve only electronic transitions, the spectroscopy of molecules is more intricate because vibrational and rotational degrees of freedom come into play as well. This has provided a rich source of information on molecular geometry, energetics and dynamics.
What are the types of molecular spectra?
The three types of molecular spectra are:
- Pure rotational spectra.
- Vibrational rotational spectra.
- Electronic band spectra.
What do you mean by molecular spectra?
: a spectrum of radiation due to electron transitions and other quantum energy changes within molecules and consisting of series of characteristic spectrum bands which are found upon high dispersion to be made up of very fine lines.
What are the types of atomic spectra?
What are the three types of atomic spectra?