Q8 of 26 Page 1

When is Hα line in the emission spectrum of hydrogen atom obtained? Calculate the frequency of the photon emitted during the transition.

OR


Calculate the wavelength of radiation emitted when electron in a hydrogen atom jumps from n=∞ to n=1.


Hα line in the emission spectrum of hydrogen atom is obtained when electron transition takes place between 1stand 2nd orbit.


Energy in nth level is given as







As the difference in energy gives the energy of photon emitted


∴




OR


Given, electron in a hydrogen atom jumps from n=∞ to n=1.


As we know,




∴


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