In the Bohr model, the Paschen series of spectral lines is caused by radiation absorbed or...

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Physics

In the Bohr model, the Paschen series of spectral lines iscaused by radiation absorbed or emitted as an electron transitionsbetween the 2nd excited state and any higher excited state (3rdexcited state and higher) of the hydrogen atom. The Paschen seriesspectral lines all involve infrared photons.

a) Using the Bohr model, calculate the energy of the electronwhen it is in the 2nd excited state, in units of electron-Volts(eV).

b) Calculate the energy of the electron when it is in the 3rdexcited state, in units of eV.

c) Calculate the energy difference between the 2nd and 3rdexcited states, in units of eV.

d) Suppose the electron falls from the 3rd excited state to the2nd excited state. Calculate the wavelength of the radiation thatis emitted in this transition. This is known as the Paschen alphaspectral line.

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