Electron shells in the Rutherford-Bohr model
The electron configuration of the known elements is represented using seven main electron shells, each of which is represented by a concentric circle with the nucleus at its centre, as shown below. The shells are designated as quantum numbers n=1 to n=7, with n=1 being the shell nearest to the nucleus (you may also see them identified with the uppercase letters K, L, M, N, O, P and Q, with K being the shell nearest to the nucleus).
Mark Vernon provides a fascinating discussion of Dante’s Divine Comedy. :
Dante begins his journey by waking up in a dark wood. The air tastes bitter. He becomes fearful. Truth is out of reach. But his crisis is a turning point.
Many today, too, are waking up to something that’s gone wrong. We’re in a spiritual crisis. We must see the world afresh and understand. I believe Dante can help us discover how.
In addition to my new book, follow every step of the way on YouTube, via the films or MP3 below, or via the podcast, Dante’s Divine Comedy.
He has made 33 mp3s available to download.