Question

What is a region range of ultraviolet spectroscopy?

Answer 1

UV-visible spectrometers can be used to measure the absorbance of ultra violet or visible light by a sample, either at a single wavelength or perform a scan over a range in the spectrum. The UV region ranges from 190 to 400 nm and the visible region from 400 to 800 nm

Answer 2

Explanation:

The ultraviolet region falls in the range between 190-380 nm, the visible region fall between 380-750 nm. The σ to σ* transition requires an absorption of a photon with a wavelength which does not fall in the UV-vis range