Sections Key Equations Key Equations quantum energy E=nhfE=nhf energy of a photon E=hfE=hf maximum kinetic energy of a photoelectron KEe=hf−BEKEe=hf−BE binding energy of an electron BE=hfOBE=hfO momentum of a photon (deBroglie relation) p=hλp=hλ Print Share Key Equations Copy and paste the link code above.