Question

The balmer series is formed by electron transitions in hydrogen that

Answer 1

The Balmer series refers to the spectral lines of hydrogen, associated to the emission of photons when an electron in the hydrogen atom jumps from a level
`n \geq 3` to the level
`n=2`.

The wavelength associated to each spectral line of the Balmer series is given by:

`(1)/(\lambda)=R_H ((1)/(2^2)-(1)/(n^2))`

where
`R_H` is the Rydberg constant for hydrogen, and where
`n` is the initial level of the electron that jumps to the level n = 2.

The first few spectral lines associated to this series are withing the visible part of the electromagnetic spectrum, and their wavelengths are:

656 nm (red, corresponding to the transition
`3 \rightarrow 2`)

486 nm (green,
`4 \rightarrow 2`)

434 nm (blue,
`5 \rightarrow 2`)

410 nm (violet,
`6 \rightarrow 2`)

All the following lines lie in the ultraviolet part of the spectrum. The limit of the Balmer series, corresponding to the transition
`\infty \rightarrow 2`, is at 364.6 nm.