What is the answer to the following using the Rydberg equation, and why is the answer correct?
If the energy of the photons emitted by excited hydrogen atoms is
-1.9369 X 10^-18 J, this would correspond most closely to an electron dropping from energy level n2 = ____to n1 = _____.
2 to 1, 3 to 1, 3 to 2, 4 to 2, or 4 to 3
Rydberg equation: (-2.179 X 10^-18)(1/n1^2-1/n2^2)