Electrons occupying their orbital can be precisely measured in some aspects. Energy most prominently: An atom does have distinct energy levels for its electrons

Electrons occupying their orbital can be precisely measured in some aspects. Energy most prominently: An atom does have distinct energy levels for its electrons and an electron changing between two of those levels absorbs or emits the precise energy difference between those levels. Thats how emission and absorption lines come to be. Thats what is called quantized. So if I see a certain emitted photon I can know precisely what the energy levels and angular momentum of the photon were before and after the emission. But I do not know its position or momentum.