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**1. Homework Statement**

in the line spectrum of atomic hydrogen there is also a group of lines known as the pfund series. these lines are produced when the electrons, excited to high energy levels, make transitions to the n=5 level.

Determine (a) the longest wavelength and the (b) shortest wavelength in this series. (c) what region in the electromagnetic spectrum in which these lines are found.

**2. Homework Equations**

En=E1/n^2

**3. The Attempt at a Solution**

i think i have to find the energy levels it could have started from

and then find the biggest jump and smallest made. but i dont know how to find the energy level it started from

**1. Homework Statement**

**2. Homework Equations**

**3. The Attempt at a Solution**

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