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Finding the Wavelength of a Photon Emitted by an Electron Transition

  • 1.

    The electron in a hydrogen atom jumps from the energy level {eq}n=2{/eq} to {eq}n=1{/eq}. What is the wavelength of the emitted photon?

    Answers:

    • {eq}121.5 \;\rm nm{/eq}

    • {eq}111.6 \;\rm nm{/eq}

    • {eq}153.6 \;\rm nm{/eq}

    • {eq}120.5 \;\rm nm{/eq}

  • 2.

    The electron in a hydrogen atom jumps from the energy level {eq}n=3{/eq} to {eq}n=1{/eq}. What is the wavelength of the emitted photon?

    Answers:

    • {eq}121.6 \;\rm nm{/eq}

    • {eq}202.6 \;\rm nm{/eq}

    • {eq}151.6 \;\rm nm{/eq}

    • {eq}102.6 \;\rm nm{/eq}

  • 3.

    The electron in a hydrogen atom jumps from the energy level {eq}n=4{/eq} to {eq}n=1{/eq}. What is the wavelength of the emitted photon?

    Answers:

    • {eq}87.3\; \rm nm{/eq}

    • {eq}79.3\; \rm nm{/eq}

    • {eq}97.3\; \rm nm{/eq}

    • {eq}67.3\;\rm nm{/eq}

  • 4.

    The electron in a hydrogen atom jumps from the energy level {eq}n=3{/eq} to {eq}n=2{/eq}. What is the wavelength of the emitted photon?

    Answers:

    • {eq}456\; \rm nm{/eq}

    • {eq}646\; \rm nm{/eq}

    • {eq}656\: \rm nm{/eq}

    • {eq}556\; \rm nm{/eq}

  • 5.

    The electron in a hydrogen atom jumps from the energy level {eq}n=5{/eq} to {eq}n=2{/eq}. What is the wavelength of the emitted photon?

    Answers:

    • {eq}430\; \rm nm{/eq}

    • {eq}332\; \rm nm{/eq}

    • {eq}434\; \rm nm{/eq}

    • {eq}234\; \rm nm{/eq}

  • 6.

    The electron in a hydrogen atom jumps from the energy level {eq}n=6{/eq} to {eq}n=3{/eq} and a photon is emitted. What is the wavelength of the emitted photon?

    Answers:

    • {eq}109.4 \; \rm nm{/eq}

    • {eq}190.4 \; \mu m{/eq}

    • {eq}190.4 \; \rm nm{/eq}

    • {eq}1.094 \; \mu m{/eq}

  • 7.

    When an electron in a hydrogen atom jumps from the energy level {eq}n=4{/eq} to {eq}n=3{/eq}, a photon is emitted. What is the wavelength of this photon?

    Answers:

    • {eq}1.876 \; \rm nm{/eq}

    • {eq}1.875\; \mu m{/eq}

    • {eq}1.866\; \mu m{/eq}

    • {eq}1.879\; \rm nm{/eq}

  • 8.

    The electron in a hydrogen atom emits a photon when it jumps from the energy level {eq}n=7{/eq} to {eq}n=3{/eq}. What is the wavelength of this emitted photon?

    Answers:

    • {eq}1.05\; \rm nm{/eq}

    • {eq}1.2 \; \mu m{/eq}

    • {eq}1005\; \rm nm{/eq}

    • {eq}1500\; \rm nm{/eq}

  • 9.

    When an electron jumps from a higher energy level to a lower energy level, it emits photons. In an experiment, the electron in a hydrogen atom jumps from the energy level {eq}n=6{/eq} to the ground state {eq}n=1{/eq}. What is the wavelength of the emitted photon?

    Answers:

    • {eq}90.9 \; \rm nm{/eq}

    • {eq}91.8 \; \mu m{/eq}

    • {eq}92.1 \; \rm nm{/eq}

    • {eq}93.7 \; \mu m{/eq}

  • 10.

    If the electron in a hydrogen atom jumps from the energy level {eq}n=5{/eq} to {eq}n=4{/eq}, what should be the wavelength of the emitted photon?

    Answers:

    • {eq}4090 \; \rm nm{/eq}

    • {eq}3052 \; \rm nm{/eq}

    • {eq}4052 \; \rm nm{/eq}

    • {eq}4021 \; \rm nm{/eq}

  • 11.

    What is the wavelength of the emitted photon when the electron in a hydrogen atom jumps from the energy level {eq}n=4{/eq} to {eq}n=2{/eq} ?

    Answers:

    • {eq}585.1 \; \rm nm{/eq}

    • {eq}486.1 \; \rm nm{/eq}

    • {eq}485.1 \; \rm nm{/eq}

    • {eq}586.1 \; \rm nm{/eq}

  • 12.

    The electron in a hydrogen atom emits a photon when it jumps from the higher energy level {eq}n=7{/eq} to the lower energy level {eq}n=2{/eq}. What is the wavelength of the emitted photon?

    Answers:

    • {eq}395.0 \; \rm nm{/eq}

    • {eq}397.0 \; \rm nm{/eq}

    • {eq}391.0 \; \rm nm{/eq}

    • {eq}394.0 \; \rm nm{/eq}

  • 13.

    The electron in a hydrogen atom emits a photon when it jumps from the higher energy level {eq}n=7{/eq} to the lowest energy level {eq}n=1{/eq}. What is the wavelength of the emitted photon?

    Answers:

    • {eq}83.02 \; \rm nm{/eq}

    • {eq}63.02 \; \rm nm{/eq}

    • {eq}93.02 \; \rm nm{/eq}

    • {eq}85.02 \; \rm nm{/eq}

  • 14.

    The electron in a hydrogen atom emits a photon when it jumps from the higher energy level {eq}n=7{/eq} to the lowest energy level {eq}n=4{/eq}. What is the wavelength of the emitted photon?

    Answers:

    • {eq}3277 \; \rm nm{/eq}

    • {eq}4177 \; \rm nm{/eq}

    • {eq}2166 \; \rm nm{/eq}

    • {eq}3165 \; \rm nm{/eq}

  • 15.

    The electron in a hydrogen atom emits a photon when it jumps from the higher energy level {eq}n=7{/eq} to the lowest energy level {eq}n=5{/eq}. What is the wavelength of the emitted photon?

    Answers:

    • {eq}5651 \; \rm nm{/eq}

    • {eq}3654 \; \rm nm{/eq}

    • {eq}4653 \; \rm nm{/eq}

    • {eq}4354 \; \rm nm{/eq}

  • 16.

    The electron in a hydrogen atom emits a photon when it jumps from the higher energy level {eq}n=7{/eq} to the lowest energy level {eq}n=6{/eq}. What is the wavelength of the emitted photon?

    Answers:

    • {eq}12.7 \; \rm \mu m{/eq}

    • {eq}12.6 \; \rm \mu m{/eq}

    • {eq}12.4 \; \rm \mu m{/eq}

    • {eq}12.1 \; \rm \mu m{/eq}

  • 17.

    The electron in a {eq}\rm Li^{2+}{/eq} ion jumps from the energy level {eq}n=3{/eq} to {eq}n=1{/eq}. What is the wavelength of the emitted photon?

    Answers:

    • {eq}13.4\; \rm nm{/eq}

    • {eq}11.4\; \rm nm{/eq}

    • {eq}10.4\; \rm nm{/eq}

    • {eq}12.4\; \rm nm{/eq}

  • 18.

    The electron in a {eq}\rm Li^{2+}{/eq} ion jumps from the energy level {eq}n=3{/eq} to {eq}n=2{/eq}. What is the wavelength of the emitted photon?

    Answers:

    • {eq}72.9\; \rm nm{/eq}

    • {eq}70.9\; \rm nm{/eq}

    • {eq}71.9\; \rm nm{/eq}

    • {eq}69.9\; \rm nm{/eq}

  • 19.

    The electron in a {eq}\rm Li^{2+}{/eq} ion jumps from the energy level {eq}n=5{/eq} to the ground state energy level {eq}n=1{/eq}. What is the wavelength of the emitted photon?

    Answers:

    • {eq}11.6\; \rm nm{/eq}

    • {eq}10.6\; \rm nm{/eq}

    • {eq}20.6\; \rm nm{/eq}

    • {eq}12.6\; \rm nm{/eq}

  • 20.

    The electron in a hydrogen like {eq}\rm Li^{2+}{/eq} ion jumps from a higher energy level {eq}n=5{/eq} to a lower energy level {eq}n=2{/eq}. What is the wavelength of the emitted photon?

    Answers:

    • {eq}48.2\; \rm nm{/eq}

    • {eq}38.2\; \rm nm{/eq}

    • {eq}68.2\; \rm nm{/eq}

    • {eq}58.2\; \rm nm{/eq}

  • 21.

    The electron in a hydrogen like {eq}\rm Li^{2+}{/eq} ion jumps from a higher energy level {eq}n=5{/eq} to a lower energy level {eq}n=3{/eq}. What is the wavelength of the emitted photon?

    Answers:

    • {eq}142.4\; \rm nm{/eq}

    • {eq}142.5\; \rm nm{/eq}

    • {eq}142.8\; \rm nm{/eq}

    • {eq}142.1\; \rm nm{/eq}

  • 22.

    The electron in a hydrogen like {eq}\rm Be^{3+}{/eq} ion jumps from a higher energy level {eq}n=5{/eq} to a lower energy level {eq}n=2{/eq}. What is the wavelength of the emitted photon?

    Answers:

    • {eq}27.1\; \rm m{/eq}

    • {eq}29.1\; \rm nm{/eq}

    • {eq}24.1\; \rm nm{/eq}

    • {eq}37.1\; \rm nm{/eq}

  • 23.

    The electron in a hydrogen like {eq}\rm Be^{3+}{/eq} ion jumps from a higher energy level {eq}n=3{/eq} to a lower energy level {eq}n=1{/eq}. What is the wavelength of the emitted photon?

    Answers:

    • {eq}6.41\; \rm nm{/eq}

    • {eq}3.41\; \rm nm{/eq}

    • {eq}2.41\; \rm nm{/eq}

    • {eq}5.41\; \rm nm{/eq}

  • 24.

    The electron in a hydrogen like {eq}\rm Be^{3+}{/eq} ion jumps from a higher energy level {eq}n=7{/eq} to a lower energy level {eq}n=1{/eq}. What is the wavelength of the emitted photon?

    Answers:

    • {eq}4.82\; \rm nm{/eq}

    • {eq}5.82\; \rm nm{/eq}

    • {eq}3.82\; \rm nm{/eq}

    • {eq}9.82\; \rm nm{/eq}

  • 25.

    The electron in a hydrogen like {eq}\rm Be^{3+}{/eq} ion jumps from a higher energy level {eq}n=5{/eq} to a lower energy level {eq}n=1{/eq}. What is the wavelength of the emitted photon?

    Answers:

    • {eq}1.8\; \rm nm{/eq}

    • {eq}5.9\; \rm nm{/eq}

    • {eq}5.6\; \rm nm{/eq}

    • {eq}6.8\; \rm \mu m{/eq}

  • 26.

    The electron in a hydrogen like {eq}\rm B^{4+}{/eq} ion jumps from a higher energy level {eq}n=5{/eq} to a lower energy level {eq}n=2{/eq}. What is the wavelength of the emitted photon?

    Answers:

    • {eq}70.4\; \rm nm{/eq}

    • {eq}37.4\; \rm nm{/eq}

    • {eq}47.4\; \rm nm{/eq}

    • {eq}17.4\; \rm nm{/eq}

  • 27.

    The electron in a hydrogen like {eq}\rm B^{4+}{/eq} ion jumps from a higher energy level {eq}n=3{/eq} to a lower energy level {eq}n=1{/eq}. What is the wavelength of the emitted photon?

    Answers:

    • {eq}2.10\; \rm nm{/eq}

    • {eq}4.10\; \rm nm{/eq}

    • {eq}8.10\; \rm nm{/eq}

    • {eq}3.10\; \rm nm{/eq}

  • 28.

    The electron in a hydrogen like {eq}\rm He^{1+}{/eq} ion jumps from a higher energy level {eq}n=5{/eq} to a lower energy level {eq}n=1{/eq}. The wavelength of the emitted photon is?

    Answers:

    • {eq}23.78\; \rm nm{/eq}

    • {eq}23.76\; \rm nm{/eq}

    • {eq}23.71\; \rm nm{/eq}

    • {eq}23.74\; \rm nm{/eq}

  • 29.

    The electron in a hydrogen like {eq}\rm He^{1+}{/eq} ion jumps from a higher energy level {eq}n=3{/eq} to a lower energy level {eq}n=2{/eq}. The wavelength of the emitted photon is?

    Answers:

    • {eq}144.1\; \rm nm{/eq}

    • {eq}154.1\; \rm nm{/eq}

    • {eq}174.1\; \rm nm{/eq}

    • {eq}164.1\; \rm nm{/eq}

  • 30.

    The electron in a hydrogen like {eq}\rm He^{1+}{/eq} ion makes a transition from a higher energy level {eq}n=6{/eq} to a lower energy level {eq}n=3{/eq}. The wavelength of the emitted photon is?

    Answers:

    • {eq}373.5\; \rm nm{/eq}

    • {eq}263.5\; \rm nm{/eq}

    • {eq}273.5\; \rm nm{/eq}

    • {eq}250.5\; \rm nm{/eq}

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