## Rydberg Constant

H-Atom ($E_{n}=-\frac{hR}{n^{2}}$)

Vinay Sharma 3L
Posts: 17
Joined: Fri Sep 25, 2015 3:00 am

### Rydberg Constant

So last week, I accidentally came to class an hour early, and sat in on a chem 20A class. The professor was deriving the Rydberg constant and it came out to be different from what we use in chem 14A. Does anyone know why there are different values for the Rydberg constant?

Thanks,
Vinay

Matthew Gutierrez 2D
Posts: 19
Joined: Fri Sep 25, 2015 3:00 am

### Re: Rydberg Constant

What value did they get for the Rydberg constant in that class?

Chem_Mod
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### Re: Rydberg Constant

That professor probably derived the Rydberg constant with units of wavenumber, as 109700 cm-1

All you have to do is multiply this by the speed of light to get the Rydberg frequency in 14A's course reader: 3.29 PHz