# hydrogen spectrum

In the spectrum of atomic hydrogen, several lines are generally classified together as belonging to a series (for example, Balmer series, Lyman series, Paschen series), What is common to the lines within a series that makes grouping them together logical?

The answers say that each series has a different lower energy level, can anyone pls explain

The Lyman series is made of lines in the spectrum corresponding to the return of the electron from a higher level ($$n = 2, 3, 4,$$ etc.) to the first and deepest level ($$n = 1$$) .
The Balmer series is made of lines in the spectrum corresponding to the return of the electron from a higher level ($$n = 3, 4, 5$$, etc.) to the second level ($$n = 2$$)
The Paschen series is made of lines in the spectrum corresponding to the return of the electron from a higher level ($$n = 4, 5,$$ etc.) to the third level ($$n = 3$$)