In post 16.29, we saw that the lowest energy levels in an atom are conventionally labelled, in order of increasing energy, 1s, 2s and 2p. There are three 2p levels that all correspond to the same energy; they are denoted 2px, 2py, and 2pz. Electrons occupy these energy levels according to the principles explained in… Continue reading 24.12 Atomic orbitals