Solids are made of nuclei and electrons. Much of our information about solids is found by studying them using other particles like light (photons) and neutrons. According to the laws of quantum mechanics, all particles act like waves and waves act like particles, with the relation λ = h / p, where λ is the wavelength, p is the momentum, and h is Planck's constant. The relation of energy and momentum for particles like electrons and neutrons is E = p2 / 2m, and for photons is E = pc. Give the energies in eV for each of the particles below for the wavelength shown: