Balmer series was observed and analysed before the other series .Can you suggest a reason for such an order?

The balmer series for the H-atom can be ob-served

The balmer series for the H-atom can be ob-served

If the series limit of Lyman series for Hydrogen atom is equal to the series limit Balmer series for a hydorgen like atom, then atomic number of this hydrogen-like atom will be

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

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

Wavelengths of the first lines of the Lymar: series, Paschen series and Balmer series, in hydrogen spectrum are denoted by lambda_(L) , lambda_(P) and lambda_(B) respectively. Arrange these wavelengths in increasing order.

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.

Whenever a photon is emitted by hydrogen in balmer series it is followed by another in lyman series what wavelength does this latter photon correspond to?

The median of a series is 10. Two additional observations 7 and 20 are added to series. The median of new series is

If the series limit wavelength of the Lyman series for hydrogen atom is 912 Å , then the series limit wavelength for the Balmer series for the hydrogen atom is