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Which one of the following cannot emit r...

Which one of the following cannot emit radiation and why ? Excited nucleus excited electron.

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Excited nucleus can emit radiation, but excited electron cannot. This is because energy of electronic energy levels is in the range of electron volt (eV) and not MeV (million electronic volt). `gamma` -radiations have energy of the order of MeV.
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Knowledge Check

  • Which one of the following represents the correct ratio of the energy of electron in ground state of H atom to that of the electron in the first excited state of Li?

    A
    `4:9`
    B
    `9:4`
    C
    `1:4`
    D
    `4:1`

  • Which one of the following represents the correct ratio of the energy of electron in ground state of H atom to that of the electron in the first excited state of Li?

    A
    `4:9`
    B
    `9:4`
    C
    `1:4`
    D
    `4:1`

  • Which of the following types of radiation is not emitted by the electronic structure of atoms?

    A
    Ultraviolet light
    B
    X-rays
    C
    Visible light
    D
    `gamma`-rays

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