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Due to the number of different transition states of the excitable electrons: electronic levels, vibrational levels, and rotational levels. Rotational levels are within vibrational levels, which are within electronic levels. This leads to many different transitions of similar energy, which leads to a broad absorption band.
Wiki User
∙ 11y ago
Wiki User
∙ 11y agouv is peak ground state to exited state is going so is peaks is broad
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Why to analyze formaldehyde by using 412 nm in the Uv-Vis?
it is the absorption maximum for formaldehyde...
Why non metals are not absorbed by Atomic Absorption Spectroscopy?
Because nonmetallic elements are in vacuum UV
Are the broad bands or regions located around the nucleus where the electrons are found called energy rings?
yes
Why does Zinc Oxide seem to block UV well?
Zinc oxide absorbs UV radiation through a process of electron excitation called band-gap absorption. Since energy always has to be released somewhere, and UV rays are pretty fierce, zinc oxide absorbs the UV rays and turns them into comparably harmless infrared, which it then gets rid of as heat.
Why is the spectroscope scale illuminated?
The reason that the spectroscope scale is illuminated is so that you know where the wavelengths of the lines are at. It also determines the measurement of the absorption bands.
What type of organic compounds show UV absorption bands?
Aromatic compounds, conjugated dienes, and compounds with extensive pi-electron systems often show UV absorption bands. These compounds have delocalized electrons that can undergo electronic transitions when exposed to ultraviolet light, leading to absorption of UV radiation.
What is uv absorption?
UV absorption is done by ozone. It is present as ozone layer.
How do I determine what wavelength to use in petroleum product to determine ultraviolet absorption?
To determine UV-absorption you need to use UV-light. And there's a defined wavelength for UV-light.
What is quantum transition for the uv-vis absorption?
Quantum transition for the UV-VIS absorption refers to taking the electron transitions associated with visible and ultraviolet.
Why you get broad peak in UV spectroscopy instead of sharp peak?
UV-visible absorption spectroscopy probes electronic transitions due to electronic excited states, where as absorption of IR radiation excites molecular vibrations and no electronic excited states. However, UV-visible radiation can also excite the molecular vibrations as well, and so what is observed is the superposition of the electronic absorption in addition to the vibrational absorption spectra. IR spectra are broadened by molecular rotations, which are caused by the absorption of lower energy microwave radiation (and rotational spectra can be extremely sharp). If the species you are probing are atoms only, than they do not have any vibrations (because there are no bonds) and so the UV-visible spectra of atoms is very sharp.
What does UV ray absorption mean?
UV rays are harmful rays of the sun. They are absorbed by the ozone layer.
When a molecule absorbs UV radiation what does it cause?
When a molecule absorbs UV, it decomposes. Ozone also does the same.
What has the author M A Cavicchia written?
M. A. Cavicchia has written: 'Time-resolved IR-absorption spectroscopy of hot-electron dynamics in satellite and upper conduction bands in GaP' -- subject(s): Ultraviolet absorption, Conduction bands, Electron transfer, Infrared absorption, Absorption spectra
Spectrophotometric methods using light?
For example UV-VIS absorption spectrophotometry.
Why to analyze formaldehyde by using 412 nm in the Uv-Vis?
it is the absorption maximum for formaldehyde...
What is a BAL?
A BAL is an abbreviation for a broad absorption line, found in astrophysics.
What effect does the ozones absorption of ultravioletradiation have on the stratosphere?
The ozone absorption of UV rays maintain a ozone cycle. This ozone cycle is maintained by sun's rays.
