Energy Levels: The wavelength of the emitted photon if an electron in the hydrogen atom makes a transition from the n = 2 state to the ground state is closest to which of the following values? (c = 3.0 × 108 m/s, h = 6.626 × 10-34 J ? s, 1 eV = 1.60 × 10-19 J)
A. 122 nm
B. 203 nm
C. 243 nm
D. 389 nm
E. 411 nm
Answer: A
Physics & Space Science
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