When the excited electron of a H atom from n = 5 drops to the ground state, the maximum number of emission lines observed are

Step-by-step solution

Maximum number of emission lines = Δn Δn + 1 2 Δn = n 2 - n 1 n 2 = 5 n 1 = 1 Maximum number of emission lines= 4 4 + 1 2 = 20 2 = 10 These lines correspond to the lyman series of the hydrogen spectrum