Question

A hydrogen atom is in the ground state. It absorbs energy and
makes a transition to the *n* = 6 excited state. The atom
returns to the ground state by emitting two photons, one in
dropping to *n* = 5 state, and one in further dropping to
the ground state. What are the photon wavelengths of
**(a)** the first and **(b)** the second
transitions?

Answer #1

_{1}=6 and n_{2}=1(ground
state)

let during this, the photon have the wavelength

The expression for the emission spectrum of hydrogen is given
by:

putting the available value in the equation given above we
have:

or

b) Here, n_{1}=6 and n_{2}=5

Putting these values in the equation of expression for hydrogen
spectrum:

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n = 3 excited state, emitting a photon.
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eV
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