Q2 [30%] Electron kinetic energies are often measured in units of electron-volts(1 eV = 1.6 x 10-19 J). When an aluminum plate is irradiated with UV light of 200nm wavelength, the ejected electrons are observed to have an average kinetic energy of about 2.11 eV. Use these results to ] Calculate the photon energy (in eV units). Determine the electron binding energy O of aluminum (in eV units).