the energy of an electron in nth orbit is given by En = -13.6/neV. Calculate the energy required to take an electron from ground state to the 3rd excited state.


The energy of electron in the ground state of hydrogen atom is -13.6 eV.​The energy required to take an electron from ground state to the thirs excited state is given by,E3=-[13.642]-[-13.6]=-0.85+13.60=12.75 eV

 

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