## Rydberg's Constant

Kimberly 1H
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### Rydberg's Constant

How was this constant empirically derived? Why is it 3.29x10^15 Hz to be exact, and how does it relate to the hydrogen spectrum?

Chem_Mod
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### Re: Rydberg's Constant

The constant first arose as an empirical fitting parameter in the Rydberg formula for the hydrogen spectral series, but Niels Bohr later showed that its value could be calculated from more fundamental constants, explaining the relationship via his "Bohr model." The spectrum of hydrogen can be expressed simply in terms of the Rydberg constant, using the Rydberg formula. You can see this applied in the following equation for the energy of certain levels within a hydrogen atom: En = $\frac{-h*R}{n^{2}}$.