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Topic: Finding Rydberg Constant From Gradient  (Read 2402 times)

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Offline Mark S 2014

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Finding Rydberg Constant From Gradient
« on: October 02, 2014, 07:38:58 AM »
Question : The emission spectrum of Hydrogen contains lines at four given frequencies (shown below), show that these lines all fit the Rydberg equation for frequency and hence find the Rydberg constant and n2 values.

I have been given the following frequencies : 2.466, 2.923, 3.083 and 3.157 x1015 Hz. I also know that these frequencies correspond to transitions in the Lyman series, therefore n1 must be 1.

I know I need to plot the line v=(-RH/n22) + RH and my Y intercept should be the Rydberg constant.

I can't figure out how to plot this line on a graph using Excel so that I can find out the n2 values that correspond to each frequency and the Rydberg constant.



Offline mjc123

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Re: Finding Rydberg Constant From Gradient
« Reply #1 on: October 02, 2014, 08:15:03 AM »
Assume that n2 = 2, 3, 4, 5 respectively. See if you get a good fit. If not, try another combination of values.

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