Show that the entire Paschen series is in the infrared part of the spectrum. To do this, you only need to calculate the shortest wavelength in the series.

Answer and Explanation:

The computation of the shortest wavelength in the series is shown below:-

Where

represents wavelength

R represents Rydberg's constant

represents Final energy states

and represents initial energy states

Now Substitute is

now we will put the values into the above formula

Now we will rewrite the answer in the term of

So, the whole Paschen series is in the part of the spectrum.