## Rydberg Formula

nicknavejas1B
Posts: 37
Joined: Wed Nov 15, 2017 3:04 am
Been upvoted: 1 time

### Rydberg Formula

In what ways can you alter the equation to find different values?

Chem_Mod
Posts: 18736
Joined: Thu Aug 04, 2011 1:53 pm
Has upvoted: 635 times

### Re: Rydberg Formula

Rydberg Equation: 1/λ=R(1/n(1)^2−1/n(2)^2)
You can change n(1) and n(2), which refer to different energy levels in the Hydrogen atom. For example, you can use n(1)= 1 and n(2)=2 to find the wavelength of light emitted when an electron drops from the n=2 to the n=1 energy level (or the wavelength of light needed to excite from 1 to 2). You can change n(2) to n(2)= 3 to find the wavelength emitted when the electron drops from n=3 to n=1 instead.

Helen Struble 2F
Posts: 97
Joined: Sat Aug 24, 2019 12:17 am

### Re: Rydberg Formula

Instead of using the Rydberg formula, I prefer to simply find the change in electron energy between each energy level. We know the En = -(hR)/n2. This gives us the energy of an electron at every energy level in the hydrogen spectra. Knowing this, we can set up an equation for Delta E, knowing that any Delta equation is simply the difference between final value and initial value. Delta is always, always, always final minus initial, otherwise the sign value will be wrong!