CUET Preparation Today
Energy of an atom is ground state is given as -13.6 eV. What will be the energy of He+ ion in first excited state? |
-13.6 eV +13.6 eV -26.2 eV +26.2 eV |
-13.6 eV |
Energy in nth state : En = -13.6(Z2/n2) for first excited state, n = 2 |
