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The quantized energy of an electron in h...

The quantized energy of an electron in hydrogen atom for the `n^(th)` it level is given by `E_n=(1.312)/n^2 xx 10^6 Jmol^(-1)`, Calculate the energy required to remove the electron completely from an excited hydrogen atom when its quantized level, `n=3`, `(N_A=6.02 xx 10^(23) mol^(-1))`

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