Ionization energy means the energy required to remove an electron from the valence shell of an atom. Now Bohr did believe in orbits, so what does ionization energy mean in the Bohr model?
I understand that an electron becomes a free electron after ionization (i.e. that it has to be completely removed). But I don't understand which state the electron requires energy to jump to from the ground state.
Finally, does separation energy and ionization energy mean the same thing?