The Wavelength of the Emitted Photon If an Electron in the Hydrogen

question 18

Multiple Choice

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? $\left( c = 3.0 \times 10 ^ { 8 } \mathrm {~m} / \mathrm { s } , h = \right.$ $6.626 \times 10 ^ { - 34 } \mathrm {~J} \cdot \mathrm { s } , 1 \mathrm { eV } = 1.60 \times 10 ^ { - 19 } \mathrm {~J}$ )

• A) \(243 \mathrm {~nm}\)
• B) \(411 \mathrm {~nm}\)
• C) \(203 \mathrm {~nm}\)
• D) \(389 \mathrm {~nm}\)
• E) \(122 \mathrm {~nm}\)

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