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 - DrBob222, 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 - tyler, Friday, September 25, 2015 at 6:35pm
Chemistry - tina, Wednesday, October 21, 2015 at 6:32pm