The diagram shows five of the energy levels in a helium ion. The lowest energy level is known as the ground state.

a. Determine the energy, in joules, that is required to completely remove the remaining electron, originally in its ground state, from the helium ion.
b. Determine the frequency of the radiation that is emitted when the electron drops from the level n = 3 to n = 2. State the region of the electromagnetic spectrum in which this radiation lies.
c. Without further calculation, describe qualitatively how the frequency of the radiation emitted when the electron drops from the level n = 2 to n = 1 compares with the energy of the radiation emitted when it drops from n = 3 to n = 2.

Transcribed Image Text:

-2.8 eV n=5 -3.4 eV n = 4 * n=3 -6.1 eV -13.6 ev n= 2 -54.4 ev n= 1 (ground state) Figure 28.27