Physics Modern Physics Level: High School

A hypothetical atom has four energy states as shown in the figure at “click here" Which of the following photon energies Ev could not be found in the emission spectra of this atom after it has been excited to the n = 4 state ?

1) Ev = 5 eV

2) Ev = 4 eV

3) Ev = 1 eV

4) Ev = 3 eV

5) Ev = 2 eV