How much energy is required to ionise a H – atom if the electron occupies n=5 orbit ? Compare your answer with the ionization energy of H-atom (energy required to remove the electron from n=1 orbit ). How much energy is required to ionise a H - atom if the electron occupies n=5 orbit ? Compare your answer with the ionization energy of H-atom (energy required to remove the electron from n=1 orbit ). November 12, 2020 Category: Chapter 2 - Atomic Structure , Chemistry , NCERT Exemplar Class 11 , Facebook Messenger WhatsApp Share this:TwitterFacebook Related