MANY examples of changes in ultra-violet absorption spectra attributable to hydrogen bonding have been ... of lone-pair electrons on an oxygen atom acting as a proton acceptor 2.

Hot gases don’t produce a continuous emission spectrum. Black hydrogen absorption lines are at the same wavelength as the bright hydrogen emission lines. Key fact Line emission spectra are ...

Using quick-scan X-ray absorption spectroscopy at ... effectively bound to the platinum atom, altering its electronic state and surrounding atomic structure. Hydrogen was found to adsorb more ...