Question

Which of the compound does not absorb light in the uv visible spectrum?

Answer 1

As a general rule, moleculescontaining conjugated systems of pi electrons absorb light closer to the visible region than saturated molecules or those with isolated double or triple bonds. ... Ethylene absorbs light of wavelength in the far ultraviolet part of the spectrum, at 180 nm.

Answer 2

Chloral hydrate is an example of a chemical compound that does not absorb UV light.

• A compound can absorb UV-visible spectrum light only if it has a chromophore or color-producing molecule in it then it cannot absorb UV-visible spectrum.

• Chloral hydrate lacks chromophore and therefore cannot absorb UV light.

• The main characteristic of chromophores is that they have 'pi' electrons like benzene.

• The technique used to determine the absorption of a molecule is by using UV spectroscopy.