The ratio of the frequency corresponding to the third line in the lyman series of hydrogen

The ratio of the wave number corresponding to the 1^(st) line of Lyman series of H- atom and 3^(rd) line of Pashcan series of a hydrogen like sample is 9:16 . Then find the third excitation potential in terms of volt for this H- like samples.

The ratio of wavelength of photon corresponding to the alpha -line of Lyman series in H-atom and beta - line of Balmer series in He^(+) is :

Calculate (a) The wavelength and the frequency of the H_(beta) line of the Balmer series for hydrogen. (b) Find the longest and shortest wavelengths in the Lyman series for hydrogen. In what region of the electromagnetic spectrum does this series lie ? (c) Whenever a photon is emitted by hydrogen in Balmer series, it is followed by another photon in LYman series. What wavelength does this latter photon correspond to ? (d) The wavelength of the first of Lyman series for hydrogen is identical to that of the second line of Balmer series for some hydrogen-like ion X. Find Z and energy for first four levels.

The ratio of the frequenices of the long wavelength llmits of Lyman and balman series of hydrogen spectrum is

Obtain the ratio of the shortest wavelength of spectral line in the Lyman series to the longest wavelength of spectral line in the Balmer series.

The wavelength of the third line of the Balmer series for a hydrogen atom is -