Consider only transitions involving the following energy levels for the H atom.

n =5

n = 4

n = 3

n = 2

n = 1

(a) How many emission lines are possible, considering only the five quantum levels?

(b) Photons of the lowest frequency are emitted in a transition from the level with n = 2Your answer is incorrect. to a level with n = 3Your answer is incorrect..

## Answers (1)

(a) 4 + 3 + 2+ 1 = 10 lines

(b) Transition from n=5 to n=4