Determine whether each transition in the hydrogen atom corresponds to absorption or emission of energy.
a. n = 3 → n = 1
b. n = 2 → n = 4
c. n = 4 → n = 3

• A. a. absorption; b. absorption; c. emission
• B. a. emission; b. absorption; c. emission
• C. a. emission; b. emission; c. emission
• D. a. emission; b. absorption; c. absorption

Answer: (B)