Calculating the wavelength for series limit for the Paschen series

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SUMMARY

The discussion focuses on calculating the wavelength for the series limit of the Paschen series, which involves transitions from higher energy levels to n = 3. The Rydberg equation is utilized, specifically with n_f set to 3. The series limit corresponds to the initial position n_i approaching infinity, where 1/infinity equals 0, indicating that the wavelength approaches a specific value as n_i increases. Confusion arises regarding the numerical values associated with the series limit, with some sources suggesting 12 or 14, but the correct interpretation is that the series limit is defined as n_i approaching infinity.

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vanabariel42
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Hi. I'm having some trouble calculating the wavelength for series limit for the Paschen series.
I've set the Rydberg equation up with 1/(n sub f squared) as 1/(3 squared), but I'm not sure what goes in for 1/(n sub i squared) as the initial position.
I'd appreciate any help. Thanks!
 
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The Paschen series describes transitions from a higher level down to n = 3. So n_f = 3 and n_i > 3
 
That I know, but what number corresponds to the series limit? Some places said 14, others said 12, and others infinity. I'm not sure how to use infinity in a calculation though.
 
Lucky for you all you need to use is 1/infinity. What's that? :wink:
 
that's a good question.
 
Try this:
\frac{1}{\infty} = 0
 
vanabariel42 said:
That I know, but what number corresponds to the series limit? Some places said 14, others said 12, and others infinity.
That you're asking this question means you do not understand what is meant by the term "series limit". Please make sure you understand what it means. If not, ask and find out.
 

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