Consider the following portion of the energy-level diagram for hydrogen: -In the hydrogen spectrum, what is the wavelength of light associated with the n = 2 to n = 1 electron transition? A) 0.1097 × 10^-8 cm B) 364.9 nm C) 9.122 × 10^-8 m D) 1.097 nm E) 1.216 × 10^-7 m

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The transition from n=2 to n=1 in the hydrogen atom corresponds to the Lyman series, and the wavelength is approximately 121.6 nm, which is equivalent to 1.216 × 10^-7 m.

Consider the Following Portion of the Energy-Level Diagram for Hydrogen