Electronic Transition
| Formula / Notation | ΔE = hν = E₂ − E₁; selection rules: Δl = ±1 |
|---|---|
| Also Known As | Electron transition; atomic transition; spectroscopic transition; absorption/emission transition; UV-Vis transition |
What is Electronic Transition?
An electronic transition is the movement of an electron from one energy level (orbital) to another, occurring through absorption or emission of a photon. The energy of the photon equals the difference in energy between the two levels (ΔE = hν). Electronic transitions in the UV-visible region give rise to the colour of compounds and are the basis of UV-Vis spectroscopy.
Formula & Notation
Other Names / Synonyms: Electron transition; atomic transition; spectroscopic transition; absorption/emission transition; UV-Vis transition
Properties & Characteristics
Uses & Applications
Safety Information
Always consult the SDS/MSDS before handling any chemical. This information is for educational purposes only.
Key Facts
Frequently Asked Questions
An electronic transition is the movement of an electron from one energy level (orbital) to another, occurring through absorption or emission of a photon. The energy of the photon equals the difference in energy between the two levels (ΔE = hν). Electronic transitions in the UV-visible region give rise to the colour of compounds and are the basis of UV-Vis spectroscopy.
UV-Vis spectroscopy for compound identification and quantification; flame tests (electronic transitions in metal ions); lasers; fluorescence microscopy; photochemistry; solar cell chromophores; dye chemistry
No hazard from the concept. UV radiation used in spectroscopy is harmful to eyes; use shielded instruments. Some photochemical processes can generate reactive intermediates.
The formula or notation for Electronic Transition is: ΔE = hν = E₂ − E₁; selection rules: Δl = ±1