What Is the Wavelength of the Photon Emitted When an Electron

question 68

Multiple Choice

What is the wavelength of the photon emitted when an electron in a hydrogen atom which is in the initial state $n = 4$ jumps to the final state $n = 2$ ? $\left( c = 3.00 \times 10 ^ { 8 } \mathrm {~m} / \mathrm { s } , h = 6.626 \times 10 ^ { - 34 } \mathrm {~J} \cdot \mathrm { s } , 1 \mathrm { eV } = \right.$ $1.60 \times 10 ^ { - 19 } \mathrm {~J}$ )

• A) \(556 \mathrm {~nm}\)
• B) \(312 \mathrm {~nm}\)
• C) \(486 \mathrm {~nm}\)
• D) \(243 \mathrm {~nm}\)
• E) \(609 \mathrm {~nm}\)

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