Balmer and Lyman Series

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Andrew Dao 3C
Posts: 64
Joined: Wed Sep 30, 2020 9:41 pm

Balmer and Lyman Series

Postby Andrew Dao 3C » Sun Dec 13, 2020 10:51 am

On sapling they said that the Balmer series involves visible light and occurs when H atoms go from an excited state to n = 2, and the Lyman series involves UV light and occurs when H atoms go from excited to n = 1. Is this a good way to distinguish the two series, or should I use the actual wavelength numbers?

Trevor_Ramsey_3H
Posts: 110
Joined: Wed Sep 30, 2020 9:58 pm

Re: Balmer and Lyman Series

Postby Trevor_Ramsey_3H » Sun Dec 13, 2020 11:05 am

I just remember that Lyman is n=1 and is typically around 90-120 nm and Balmer is n=2 and typically around like 450-600nm. As long as you know these it won't be hard to discern when to use this.

Charmaine Ng 2D
Posts: 108
Joined: Wed Sep 30, 2020 9:37 pm

Re: Balmer and Lyman Series

Postby Charmaine Ng 2D » Sun Dec 13, 2020 1:22 pm

It could be useful to know the actual wavelength numbers, but from what Dr. Lavelle has taught and tested us on so far, it seems like he just wants to to distinguish them based on their energy levels! So I wouldn't worry too much about memorizing the actual numbers

705340227
Posts: 101
Joined: Wed Sep 30, 2020 10:08 pm

Re: Balmer and Lyman Series

Postby 705340227 » Mon Dec 14, 2020 10:57 pm

I think normally you could calculate the frequency or wavelength based on what the problem gives you so it probably isn't necessary to memorize them!

Sam Wentzel 1F 14B
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Re: Balmer and Lyman Series

Postby Sam Wentzel 1F 14B » Tue Dec 15, 2020 2:56 am

Knowing the ranges is fairly important, but usually the jump from principle quantum number is noted in the problem.

jasmineculilap_3F
Posts: 101
Joined: Wed Sep 30, 2020 9:40 pm

Re: Balmer and Lyman Series

Postby jasmineculilap_3F » Tue Dec 15, 2020 3:45 am

I remember that Lyman is around 100nm while Balmer is around 400-600nm, but knowing the energy levels is important for equations.

Bella Bursulaya 3G
Posts: 149
Joined: Wed Sep 30, 2020 9:54 pm

Re: Balmer and Lyman Series

Postby Bella Bursulaya 3G » Tue Dec 15, 2020 9:36 am

Well, the actual wavelength number will depend on the n value, so yes, the n value determines which series you use.


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