The Energy Required To Excite A Hydrogen Atom From n = 1 To n = 2 Energy State 10.2 eV. What Is The Wavelength Of The Radiation Emitter By The Atom When It Goes Back To Its Ground State?

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Question

The energy required to excite a hydrogen atom from n = 1 to n = 2 energy state 10.2 eV. What is the wavelength of the radiation emitter by the atom when it goes back to its ground state?

Solution

Correct option is

1220 Å

Given, 

    

Therefore, frequency emitted radiation is   

        

and wavelength is 

        

           

           

             

           = 1220 Å.

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