<p>Sorry if this seems trivial, but I was sick today and missed a lecture. I've managed to confuse myself with something that I'm sure is easier than I'm making it out to be...</p>
<p>b) A certain line in the spectrum of atomic hydrogen is associated with the electronic transition in the H atom from the sixth energy level (n=6) to the second energy level (n=2).</p>
<p>i) Indicate whether the H atom emits energy or whether it absorbs energy during the transition. Justify your answer.</p>
<p>Thank you for any help...</p>