Calculate the wavelength of the light emitted when an electron in a hydrogen atom makes each of the following transitions as well as state the region of the electromagnetic spectrum (infrared, visible, ultraviolet, etc.) where the light in part a,b,c, and d are found.
A. n = 2 -----> n = 1
B. n = 3 -----> n =1
C. n = 4 -----> n = 2
D. n = 5 -----> n = 2