[joytee]

Hi all.. I'm new here, and would you please help me answer this one problem. Thanks a lot.  

"What electron transition in a hydrogen atom, starting from orbit n=7, will produce infrared light of wavelength 2170 nm? (In what orbit must the electron end up?)"

PLease show your solution.

Thankkk you.

This is a problem in my homework, and I started converting the wavelenth to frequency, then from there, I calculated the energy change. After that, I lost track.

Please help me. Thanks..

[themark]

hello joytee,

Hint:

Rydberg formula

hope this helps.

[Donaldson Tan]

the above equation is called the Rydberg-Ritz Formula. It relates the transition of 1 energy level to another for an electron inside the hydrogen atom. R_H is the Rydberg's Constant, which I believe you can find its value via google.

the wavelength and n₁ are given in the question.

your job is to find n₂