- #1
M. next
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Please see attachment. What are the arrow heads supposed to mean? Only emission is allowed and no absorption?
I mean, selection rules allow Δl=±1. But the figure is saying otherwise.
I also read in another book, that the only series observed in absorption is that to the ground state, where it is called the p-series.
Please explain, I am kind of lost in figures and resources.
I mean, selection rules allow Δl=±1. But the figure is saying otherwise.
I also read in another book, that the only series observed in absorption is that to the ground state, where it is called the p-series.
Please explain, I am kind of lost in figures and resources.