## Question on 1A 11

$c=\lambda v$

Jamie Lee 1H
Posts: 54
Joined: Fri Aug 09, 2019 12:15 am

### Question on 1A 11

In the spectrum of atomic hydrogen, several lines are generally classified together as belonging to a series. What iscommon to the lines within a series that makes grouping themtogether logical?

805422680
Posts: 103
Joined: Sat Sep 14, 2019 12:16 am

### Re: Question on 1A 11

The Balmer and Lyman series are series defined by the final position of the electron, after a photon is emitted. The Lyman series involve jumps to or from the ground state (n=1); the Balmer series (in which all the lines are in the visible region) corresponds to n=2.

ishaa Diwakar 4E
Posts: 56
Joined: Wed Sep 11, 2019 12:17 am

### Re: Question on 1A 11

The grouping is also most likely determined by the wavelengths of the emitted photons, which are grouped based on UV light (Lyman) and visible light (Balmer).

Althea Zhao 1B
Posts: 101
Joined: Mon Jun 17, 2019 7:24 am

### Re: Question on 1A 11

Lines within a series share a principal quantum number, n.

Gabriella Bates 2L
Posts: 113
Joined: Thu Jul 11, 2019 12:15 am

### Re: Question on 1A 11

The grouping has to do with both the wavelength of the emitted photon and the quantum level. The lyman involves jumps to or from the n=1 energy level. Therefore, the change in energy will be greater, causing the emitted photon to have a larger frequency and therefore a smaller wavelength. Thus, the lyman series emits photons in the UV spectrum. In contrast, the balmer series involves jumps to or from the n=2 energy level. Therefore, the change in energy will be slightly smaller, causing the emitted photon to have a smaller frequency and therefore a longer wavelength. Thus, the balmer series emits photons in the visible spectrum.