Determine the energy of an electron excited from a hydrogen atom using Bohr's model. Determine the maximum wavelength of energy needed to observe a photoelectric effect for potassium.
If hydrogen atom is excited from an n = 1 state to an n = 3 state, how much energy does this correspond to? Is this absorption or an emission?
Uses of de-Broglie equation in electromagnetic spectra.
Removing an electron from solid potassium requires 222 kj/mol. Would you expect to observe a photoelectric effect for potassium using a photon of blue light (^=485nm)?