Question

In the hydrogen spectrum, the series of lines called the Balmer series results from transitions to the n = 2 energy level. What is the longest wavelength in this series?

Step 1

The expression for the wavelength of the emitted or absorbed photon when an electron of an atom makes transition within different energy levels is:

Here, *Z* is the atomic number of the atom, *n _{1}* is the principle quantum number of the final energy level,

Step 2

For the hydrogen atom, *Z=*1.

Step 3

The Balmer series represents the spectral series for which the lower en...

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