In hydrogen atom, energy of the first excited state is −3.4eV. Then find out the K.E. of the same orbit of H-atom. energy of the first excited state is −3.4eV. Then find out the K.E. of the same orbit of H-atom. In hydrogen atom November 12, 2020 Category: Chapter 2 - Atomic Structure , Chemistry , NEET Last 32 Years Solved 1988 - 2019 Physics and Chemistry Video Solutions , Facebook Messenger WhatsApp Share this:TwitterFacebook Related