With increasing quantum number, the energy difference between adjacent energy levels in atoms :

With increasing quantum number the energy difference between adjacent levels in atoms decreases. For example, the ratio of energy of electrons in the orbits of hydrogen atom is: E1: E2: E3: E4 ........... = 1/12: 1/22: 1/32: 1/42 .......... = 1: 1/4: 1/9: 1/16 ..........