Excited state
Lesson Flashcards: Electron Energy Levels Physics
When one or more electrons in an atom are in higher energy levels than the lowest ones they can occupy
Transition
When an electron changes from being in one energy level to being in another
Energy level
One of a set of fixed values for the energy that an electron in an atom can have
Photon
A particle of light that is emitted or absorbed as an electron moves between energy levels