A magnesium surface has a work function of 3.88 eV. Electromagnetic waves with a wavelength of 215 nm strike the surface and eject electrons. Find…

A magnesium surface has a work function of 3.88 eV. Electromagnetic waves with a wavelength of 215 nm strike the surface and eject electrons. Find the maximum kinetic energy of the ejected electrons. Express your answer in electron volts.