Which of the following is the energy of a possible excited state of hydrogen?
Since at n=1 the population of electrons is maximum i.e. at the ground state. So, maximum excitation will take place from n = 1 to n=2. Hence, n=2 is the possible excited state, Now, we have the formula for energy of H-atom (En)H = where Z = atomic number Z for H-atom = 1 therefore, (En)H =