The number of lines of Balmer series of H-atom that belong to visible region.

Number of visible lines in Balmer series.

Number of visible lines in Balmer series.

If the wave number of 1^(st) line of Balmer series of H-atom is x then the wave number of 1^(st) line of Lyman series of the He^(+) ion will be "

If the wave number of 1^(st) line of Balmer series of H-atom is 'x' then :

The wave number of limiting line in Balmer series of hydrogen atoms is

The wave number of first line of Balmer series of H-atom is 15200cm^(-1) . The wave number of first Balmer line of Li^(2+) ion is:

In which region lines of Balmer series like

In which region lines of Balmer series like