The energy of a hydrogen atom in the ground state is -13.6 eV. The energy of a He+ ion in the first excited state will be The energy of a hydrogen atom in the ground state is -13.6 eV. The energy of a He+ ion in the first excited state will be August 21, 2020 Category: Chapter 30 - Atoms , NEET Last 32 Years Solved 1988 - 2019 Physics and Chemistry Video Solutions , Physics , Facebook Messenger WhatsApp Share this:TwitterFacebook Related