How much energy is needed to ionize a hydrogen atom if electron is present in n=1 orbit?
10.2 eV
3.4eV
1 eV
13.6 eV
Energy of 1st Bohr Orbit of hydrogen is -13.6 eV.
If 13.6 eV energy is required to ionize the hydrogen atom, then the energy required to remove an electron from n = 2 is