Lesson: Electron Energy Levels

Physics

In this lesson, we will learn how to determine whether an electron shell of an atom is filled and which electron transitions are possible in a given atom.

Video

15:45

Sample Question Videos

01:49
02:35
02:02

Worksheet

Q1:

The diagram shows a hydrogen atom. The electron shown transitions between two energy levels of the atom.

Which energy level is the electron initially in?

Which energy level does the electron transition to?

Q2:

The diagram shows a hydrogen atom. An electron, initially in the third energy level of the atom, transitions to the first energy level, emitting a particle at the same time. What kind of particle is emitted in this process?

Q3:

The diagram shows an electrically neutral atom. If one of the electrons in the innermost shell were to absorb a photon and move into an excited state, which of the electron shells shown in the diagram could it move to?

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