Question

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

Answer 1

Balmer series

Explanation:

The Balmer sequence lies within the spectrum visible. Therefore, before the other series, it was observed and analyzed. Balmer series wavelength range from 364 nm (for $n_2$ = range) to 655 nm (for $n_2$ = 3).

Balmer series :- The Balmer sequence  is the name of a series of hydrogen atom spectral emission lines resulting from transitions of electrons from higher levels down to the energy level with the main quantum number 2.