1. Which of the following electron transitions corresponds to emission of the longest wavelength light?
A. from n = 3 to n = 2
B. from n = 1 to n = 5
C. from n = 4 to n = 2
D. from n = 1 to n = 2
E. from n = 5 to n = 1
2. Emission from an excited Hg atom emits at 254 nm. What is the frequency of this light?
A: 1.18e15 sec-1
B: 1.18e15 sec
C: 1.18e6 sec-1
D: 1.18e6 sec