For This question consider the figure to the right shows an energy level diagram for a certain atom (not hydrogen). Several transitions are shown and are labeled by letters. Note: The diagram is not drawn to scale. Which transition corresponds to the absorption of the photon with the longest wavelength? Which transition corresponds to the absorption of the photon with the shortest wavelength? Which transition corresponds to the absorption of a 413 nm photon? Which transition corresponds to the emission of a 248 nm photon?

## Answer

(a) C (b) D (c) E = hc/lambda = 6.626 times 106-34 times 3 times 10^8/413 times 106-9 E = 4.81 times 10^-19 joule E = 3 ev E Rightarrow – 8ev Rightarrow – 5ev (d) E = 5ev ans (B) – 3ev Rightarrow – 8ev