Light energy trapped in mercury atoms that accounts for this element's phot
Light energy trapped in mercury atoms that accounts for this element's photochemical reactions is a manifestation of this phenomenon, along with the green colour of auroras borealis and australis. Analysis of spectra reveals that this is caused by almost-final energy levels to which electrons have cascaded from higher energy levels in the act of generating light. Most nuclear excited states that decay by photon emission generally do so under 10-9 seconds, however, FTP, name this situation that occurs when an excited nuclear state has a much longer lifetime of seconds or even days.
Light energy trapped in mercury atoms that accounts for this element's photochemical reactions is a manifestation of this phenomenon, along with the green colour of auroras borealis and australis.
{Metastable} state