Question

An electron in a hydrogen atom could undergo any of the transitions listed below, by emitting light. Which transition would give light of the shortest wavelength?
n=4 to n=2
n=3 to n=1
n=2 to n=1
n=4 to n=1

Answer 1

The one in which the electron travels (moves) the farthest.

Answer 2

n=4 to n=1

Answer 3

n=5 to n=4