Question

If the shortest wavelength of hydrogen atom in lyman series is x, then the longest wavelength in paschen series is?

Answer 1

Shortest wavelength of Hydrogen in Lyman series = X =122 nm

Longest wavelength of Hydrogen in Paschen series = 1875 nm

                                                                                        = (1875/122)X

                                                                                        = 15.36885X

                                                                                        ≈ 15.37X