Thursday
March 23, 2017

Post a New Question

Posted by on Thursday, October 10, 2013 at 1:49pm.

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 - , Thursday, October 10, 2013 at 3:07pm

    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 - , Friday, September 25, 2015 at 6:35pm

    yellow

  • Chemistry - , Wednesday, October 21, 2015 at 6:32pm

    green

Answer This Question

First Name:
School Subject:
Answer:

Related Questions

More Related Questions

Post a New Question