CHEMISTRY COMMUNITY

If the wavelength of incident light on sodium metal was 810 nm, and the work function of
sodium is 1.1 eV, what is the wavelength of the ejected electron?

Am I correct in using de Broglie's equation because the wavelength we are trying to calculate is a particle not a photon?

I got 1.86*10^-9 m.

pls help

I haven’t done the computation for this lol but you’re right to use deBroglie, as the question isn’t for a photon

Do you use de Broglie when calculating wave length for an electron and c=lambda times frequency for a photon?

The equation you would use is Energy (photon) - Work Function=Kinetic Energy of Electron=1/2mv^2. And then use the known value of mass of electron to solve for velocity to plug into heisenberg's.