For the following allowed transitions, which photon would have the largest wavelength when an electron "jumps" from one energy level, characterized by the quantum number n, to another?
a. n = 2 to n = 1
b. n = 3 to n = 2
c. n = 3 to n = 1
d. n = 1 to n = 3
e. n = 4 to n = 1
B
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