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Chemistry

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A metal foil has a threshold frequency of 5.45× 1014 Hz. Which of the colors of visible light have enough energy to eject electrons from this metal.

  • Chemistry -

    Convert 5.45E14 Hz to wavelength in meters and convert to energy required.
    c = freq x wavelength
    Then convert the low end and the high end colors (4000 Angstroms low end and 7000 Angstroms high end) to energy and compare.

  • Chemistry -

    yellow

  • Chemistry -

    green

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