__Ask a Question__

### Question Asked by a Student from EXXAMM.com Team

** Q 3102780638. ** The quantized energy of an electron in hydrogen

atom for the nth level is given by `E_n = - ( 1.312)/n^2 xx 10^6 J mol^(-1)`.

Calculate the energy required to remove the electron completely from

an excited hydrogen atom when its quantized

level, n is `3. (N_A = 6.02 xx 10^(23) mol^(-1) )`.