Recent content by Elly

Thank you Dadface. Your reply was much appreciated. And thanks to all who considered my question. Does anyone have any online references they can point me to covering this area?

I am a newbie to the forum and impressed by the breadth and depth of the material here. After searching I am unable to answer a question that I have been pondering. One of my brightest students asked whether electrons other than the valence electrons were involved in the emission spectra of...